Author: GN solids Control

GN Solids Control Co., Ltd. is a leading Chinese-based manufacturer and service provider specializing in solids control and waste management equipment for the drilling industry.

GN’s product line covers the entire process of solids control and drilling waste management. A typical system is arranged in a sequential “mud tank” setup.

1. Solids Control Equipment– This is their primary focus. The equipment is designed to remove drilled solids of varying sizes from the drilling fluid.

Shale Shakers: The first and most critical line of defense. They use vibrating screens to separate large drill cuttings from the drilling fluid. GN offers various models, including linear motion and balanced elliptical motion shakers.

Vacuum Degassers: Used to remove trapped gases (like methane, H2S) from the drilling fluid, which is crucial for safety and maintaining mud density.

Desanders & Desilters: Hydrocyclones that use centrifugal force to remove fine, abrasive sand and silt-sized solids. Desanders handle larger particles than desilters.

Decanter Centrifuges: High-speed rotating machines that separate the finest solids (down to a few microns) and control the viscosity and density of the drilling fluid. They are essential for barite recovery (saving expensive weighting material).

Mud Cleaners: A combination unit that typically includes a desilter bank mounted over a fine-screen shaker.

Mud Tanks & Agitation Systems: The tanks that hold the drilling fluid, equipped with agitators to keep the mud homogeneous and prevent solids from settling.

2. Drilling Waste Management After solids are separated, GN provides equipment to handle the waste.

Vertical & Horizontal Cutting Dryers: Also known as “high-G dryers,” these further reduce the liquid content of the cuttings from the shakers, recovering more valuable drilling fluid and reducing the volume of waste for disposal.

Sludge Pumps: Transfer waste slurries and thickened sludges.

Screw Pumps & Piston Pumps: Used for moving high-viscosity fluids and slurries.

Complete Dewatering Units: Integrated systems that use chemicals (flocculants) and centrifuges to separate water from solids, producing dry solids for disposal and clean water that can often be discharged or reused.

For more cases info in detai, Find Michael Song.

Position: Manager

Email: michael@gnseparation.com/michael@gnsolidscontrol.co

Whatsapp: + 86 178 0179 9913 to have a prompt reply at earliest.

GN Solids Control Co., Ltd. is a leading Chinese-based manufacturer and service provider specializing in solids control and waste management equipment for the drilling industry.

Core Products and Services

GN’s product line covers the entire process of solids control and drilling waste management. A typical system is arranged in a sequential “mud tank” setup.

1. Solids Control Equipment (The “Rig Mud System”)
This is their primary focus. The equipment is designed to remove drilled solids of varying sizes from the drilling fluid.

• Shale Shakers: The first and most critical line of defense. They use vibrating screens to separate large drill cuttings from the drilling fluid. GN offers various models, including linear motion and balanced elliptical motion shakers.

• Vacuum Degassers: Used to remove trapped gases (like methane, H2S) from the drilling fluid, which is crucial for safety and maintaining mud density.

• Desanders & Desilters: Hydrocyclones that use centrifugal force to remove fine, abrasive sand and silt-sized solids. Desanders handle larger particles than desilters.

• Decanter Centrifuges: High-speed rotating machines that separate the finest solids (down to a few microns) and control the viscosity and density of the drilling fluid. They are essential for barite recovery (saving expensive weighting material).

• Mud Cleaners: A combination unit that typically includes a desilter bank mounted over a fine-screen shaker.

• Mud Tanks & Agitation Systems: The tanks that hold the drilling fluid, equipped with agitators to keep the mud homogeneous and prevent solids from settling.

2. Drilling Waste Management
After solids are separated, GN provides equipment to handle the waste.

• Vertical & Horizontal Cutting Dryers: Also known as “high-G dryers,” these further reduce the liquid content of the cuttings from the shakers, recovering more valuable drilling fluid and reducing the volume of waste for disposal.

• Sludge Pumps: Transfer waste slurries and thickened sludges.

• Screw Pumps & Piston Pumps: Used for moving high-viscosity fluids and slurries.

• Complete Dewatering Units: Integrated systems that use chemicals (flocculants) and centrifuges to separate water from solids, producing dry solids for disposal and clean water that can often be discharged or reused.

3. Additional Equipment

• Mud Mixing Systems: Automated systems for preparing and adding chemicals to the drilling fluid.

• Power Generation & Control Systems: They provide diesel generators and integrated control cabins to power and manage their equipment packages.

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Key Features and Strengths

• One-Stop Shop: GN can supply individual pieces of equipment or a complete, integrated solids control system tailored to a specific drilling project.

• Global Presence: With offices and service centers in key locations worldwide (including the USA, Russia, Middle East, and Southeast Asia), they provide strong after-sales support and local spare parts inventory.

• Cost-Effectiveness: They are widely recognized for offering reliable equipment at a more competitive price point than many Western OEMs (Original Equipment Manufacturers), making them a popular choice for cost-sensitive operations.

• Customization: They can design and build systems to meet specific client requirements, space constraints, or environmental regulations.

• Experience in Diverse Applications: Their equipment is used not only in oil and gas but also in HDD (Horizontal Directional Drilling), CBM (Coal Bed Methane), water well drilling, and geothermal drilling.

For more cases info in detail, find Michael Song.

Position: Manager

Email: michael@gnseparation.com/michael@gnsolidscontrol.co

Whatsapp: + 86 178 0179 9913

GN Solids Control is a leading Chinese manufacturer and global supplier of solids control and drilling waste management equipment for the oil & gas, HDD (Horizontal Directional Drilling), and tunneling industries.

Core Products and Services GN’s product line covers the entire process from fluid purification to waste handling. Their equipment is essential for maintaining drilling fluid properties, reducing costs, and meeting environmental regulations.

1. Solids Control Equipment (The “Five Stages”) This is their primary focus. The standard progression of equipment on a drilling rig is often referred to as the “mud system.”

Shale Shakers (1st Stage): The primary and first line of defense. They use vibrating screens to remove the largest drilled solids from the drilling fluid returning from the wellbore. GN offers various models, including linear motion and balanced elliptical motion shakers.

Vacuum Degassers (2nd Stage): Remove entrained gases (like methane or H₂S) from the drilling fluid, which is critical for maintaining fluid density and preventing kicks or blowouts.

Desanders & Desilters (3rd & 4th Stage): Hydrocyclones that use centrifugal force to remove finer sand and silt-sized particles. Desanders handle larger fine particles, while desilters remove the smallest ones.

Decanter Centrifuges (5th Stage): High-speed rotating machines that separate ultra-fine solids (down to the micron level) and barite (a weighting agent) from the liquid. This is crucial for recycling valuable barite and drying out waste.

2. Drilling Waste Management After separation, the solids need to be handled.

Vertical Cutting Dryers: Further dry the drill cuttings from the shale shakers, recovering more valuable drilling fluid.

Screw Presses: A continuous, low-maintenance dewatering device that squeezes water out of slurries, creating a drier, more manageable solid cake.

Slurry Pumping Systems: Transfer waste slurries between equipment.

Skip & Box Systems: Containers for collecting and transporting dried cuttings and waste.

3. Integrated Systems GN is known for building large, pre-fabricated systems that combine all the above equipment into a single, compact unit.

Mud System Skids: Custom-built systems that integrate shakers, degassers, desanders, desilters, and centrifuge pumps onto a single skid for easy transportation and rig-up.

Modular Plants: Larger, containerized systems for major drilling projects.

Key Features and Strengths
Global Presence: GN has a significant international footprint with offices, agents, and service centers in key oilfield regions worldwide (North America, Middle East, Europe, Asia, South America, Africa).

Strong R&D: They invest heavily in research and development to improve the efficiency, reliability, and automation of their equipment.

Competitive Pricing: Like many Chinese manufacturers, they often offer cost-competitive solutions compared to Western counterparts, without necessarily sacrificing quality.

Customization: They are known for their ability to design and build custom solutions tailored to specific client needs, well conditions, and rig space limitations.

One-Stop Shop: A client can source an entire solids control and waste management package from a single supplier.

For more case drawing, please find MichaelSong

Europe market manager

Whatsapp: + 86 178 0179 9913 for a prompt connect.

Email: michael@gnseparation.com

 

 

 

 

GN Solids Control is a leading Chinese manufacturer and global supplier of solids control and drilling waste management equipment for the oil & gas, HDD (Horizontal Directional Drilling), and tunneling industries.

Industries Served
Oil & Gas Drilling (Onshore & Offshore)

Horizontal Directional Drilling (HDD) for pipelines and utilities

Tunneling and Geothermal Drilling

Environmental Remediation (e.g., slurry wall drilling)

Key Features and Market Position
Cost-Effective Alternative: GN is often positioned as a high-quality, more affordable alternative to Western premium brands like MI-SWACO (a Schlumberger company) and Derrick.

Global Reach: They have a significant international presence, with equipment operating in every major oil and gas region, including North America, the Middle East, Asia, Europe, and Africa.

Focus on HDD and Tunneling: While strong in oil & gas, GN has successfully tailored its equipment for the HDD and tunneling industries, where space and efficiency are paramount. Their smaller, skid-mounted systems are very popular in these sectors.

Strong Online Presence: GN is known for its effective use of digital marketing, making their products and information easily accessible online.

About the jet mixing unit,A Jet Mixing Unit, also known as a Mud Mixing Hopper or Jet Hopper, is a fundamental piece of equipment in any drilling fluid (mud) system. Its primary purpose is to efficiently and uniformly mix dry, powdered additives (like Bentonite, Barite, polymers, and chemicals) into the liquid phase (water or oil) to create and maintain the drilling mud.

How a Jet Mixing Unit Works
The operation is based on the Venturi Effect:

Pumping: A centrifugal pump (often a dedicated “mixing pump”) takes suction from the active mud tank and discharges a high-pressure stream of fluid.

Venturi Action: This high-pressure stream is directed through a nozzle inside the hopper, creating a high-velocity jet and a zone of low pressure (a vacuum).

Induction & Mixing: The created vacuum sucks the dry powder from the hopper’s bowl down into the throat of the educator. The high-velocity jet shears and instantly hydrates the powder particles, preventing them from clumping together into “fish eyes.”

Discharge: The mixed slurry is then discharged directly back into the mud tank.

In essence, the Jet Mixing Unit is the “kitchen” of the drilling fluid system. It’s where the “recipe” for the drilling mud is prepared. GN Solids Control provides reliable and efficient jet mixing hoppers that are a crucial first step in the process of creating and maintaining the high-quality drilling fluid essential for a safe, efficient, and successful drilling operation.

For more info about the cases, please find MichaelSong.

Position: Europe Manager

Whatsapp: + 86 178 0179 9913

Email: michael@gnseparation.com/michael@gnsolidscontrol.co

GN Solids Control Co., Ltd. is a Chinese manufacturer and global supplier of comprehensive equipment and systems for solid-liquid separation, primarily serving the oil and gas drilling, HDD (Horizontal Directional Drilling), and environmental industries.

Core Products and Services GN provides a full line of solids control equipment and integrated systems. Their product portfolio includes:

1. The “Five Stages” of Solids Control Equipment:

Shale Shakers: The primary and first stage of solids removal. GN offers various models, including linear motion and elliptical motion shakers, with single, double, or triple decks to separate different sizes of solids.

Vacuum Degassers: Used to remove entrained gases (like methane or hydrogen sulfide) from the drilling fluid, which is critical for maintaining mud density and preventing kicks.

Desanders & Desilters: Hydrocyclones that remove fine, abrasive sand and silt-sized particles (15-50 microns and finer) from the drilling fluid. These are essential for protecting downstream equipment.

Decanter Centrifuges: A critical piece of equipment for the final stage of separation. High-speed centrifuges are used to separate ultra-fine solids and to dry out cuttings for waste minimization.

Mud Cleaners: A combination unit that typically integrates a desander/desilter hydrocyclone with a fine-screen shaker to process the underflow.

2. Additional and Auxiliary Equipment:

• Centrifugal Pumps: GN manufactures their own robust centrifugal pumps for transferring mud between equipment.

• Mud Tanks: Custom-designed and fabricated tanks with piping, agitators, and walkways.

• Cuttings Dryers: Also known as “vertical centrifuges,” these are used to recover even more liquid from drill cuttings, significantly reducing waste volume and disposal costs.

• Drilling Waste Management Systems: Complete solutions for processing drill cuttings, including drying, conveying, and packaging systems.

• Mud Gas Separators (“Poor Boy Degassers”): For handling large volumes of gas-invaded mud.

3. Integrated Systems:
GN is known for building complete, skidded, or trailer-mounted solids control systems that combine all the necessary equipment into a single, compact package. These are popular for land drilling rigs, workover rigs, and HDD projects.

For more cases info in detail,find Michael to have a prompt reply.

Whatsapp: + 86 178 0179 9913

Email: michael@gnseparation.com/michael@gnsolidscontrol.com

GN Solids Control is a Chinese company that has established itself as a global leader in the design, manufacturing, and service of equipment for solids control, drilling fluid purification, and drilling waste management.

This compact system for offshore platform mainly consists of 2 parts.

1. Mud Tank
2. Desilter

GN would design and build a Customized, Skid-Mounted Solids Control System that is pre-assembled and tested onshore for easy installation offshore.

1. Design and Layout

• Compact & Modular Design: GN uses 3D modeling to create a space-efficient layout that fits the platform’s specific footprint. The system is often built into multiple, interconnecting skids.

• Baffle System: Internal baffles are crucial offshore to dampen fluid surge (sloshing) caused by the vessel’s motion. This maintains stability and ensures consistent suction for the pumps.

• High-Efficiency Layout: The tank is divided into specific compartments that form a logical flow path for the drilling fluid:

  • Possum Belly / Shale Shaker Back Tank: Receives fluid directly from the flow line.

  • Settling Compartments: Allows for initial gravity separation.

  • Suction Compartments: Where the mud pumps draw clean fluid from.

  • Additive & Mixing Compartments: For treating and weighting up the fluid.

    GN Solids Control Desilters for Offshore Platforms
    GN offers robust desilter units specifically engineered for the harsh conditions of offshore operations. Key models often include the GNZJ Series.

    Key Components of a GN Offshore Desilter Unit:
    Hydrocyclones (The Core Component):

    Size: GN desilters typically use 4-inch or 5-inch hydrocyclones. A 4-inch cone is standard for fine silt removal.

    Lining: For offshore durability, the cones are often lined with polyurethane or other abrasion-resistant materials to withstand the constant erosion from fine, abrasive solids.

    Arrangement: Multiple cones (e.g., 8, 10, 12, or 16 per unit) are mounted on a single manifold to handle the high flow rates common in offshore drilling.

    Skid-Mounted & Compact Design:

    Offshore space is at a premium. GN designs its desilter units to be compact, modular, and skid-mounted for easy installation, integration, and movement on the rig.

    The unit is pre-assembled and tested onshore to minimize commissioning time offshore.

    Feed Pump:

    A dedicated, high-head centrifugal pump (often a GN brand pump) supplies pressurized drilling fluid to the hydrocyclone manifold. Proper pressure (typically ~75 psi / 0.52 MPa at the inlet) is critical for efficient separation.

    Shaker Deck (Integrated Mud Cleaner Option):

    Often, the desilter unit is mounted over a fine-mesh screen shale shaker. This combination is called a Mud Cleaner.

    The shaker processes the “underflow” (the waste slurry of fine solids and a small amount of liquid) from the hydrocyclones. This allows for the recovery of valuable liquid phase back into the active system, which is especially important with expensive oil-based or synthetic-based muds used offshore.

    For more case info, please find Michael.

  • Whatsapp: + 86 178 0179 9913
  • Email: michael@gnseparation.com/michael@gnsolidscontrol.com

GN Solids Control is a leading Chinese manufacturer and global supplier of solid-liquid separation equipment and systems, primarily serving the oil and gas drilling industry, as well as other industrial sectors like mining, tunneling, and environmental protection.

This system mainly consists of 4 modules.

1. Coarse Screen Module
2. Fine Screen Module
3. Desilter Module
4. Large Drum Decanter Centrifuge Module

A Coarse Screen Module is a standardized, pre-assembled unit that houses one or more Shale Shakers, which are the primary and first stage of solids control in drilling operations. Its main function is to remove the largest drilled solids (typically larger than 74 microns) from the drilling fluid as it returns from the wellbore.

Think of it as the “front door” for the returning drilling mud. It captures the big cuttings, protecting the downstream, more sensitive equipment from being clogged or damaged.

A Fine Screen Module is a standardized, pre-assembled unit that houses one or more fine-screen shale shakers. It is typically the second stage of primary solids control, designed to remove finer drilled solids that passed through the Coarse Screen Module.

If the Coarse Screen Module is the “coarse filter” that catches the big pieces, the Fine Screen Module is the “fine filter” that captures the smaller, abrasive sand and silt particles.

A Desilter Module is a standardized, pre-assembled unit that houses a bank of hydrocyclones called desilters. It is typically the fourth stage of solids control in the drilling fluid process, designed to remove very fine silt-sized particles that have passed through the previous equipment (shakers, degasser, and desander).

A Big Bowl Decanter Centrifuge, often simply called a high-volume centrifuge or large-capacity centrifuge, is a critical piece of solids control equipment used for the fineest and most efficient separation of solids from drilling fluids. It represents a significant step up in processing capability from shale shakers and hydrocyclones.

It is called “Big Bowl” because it features a larger diameter rotating cylinder (the bowl) and, typically, a longer length compared to standard decanter centrifuges. This larger internal volume allows it to handle very high flow rates and separate extremely fine particles.

For more case info in detail,please find Manager Michael by whatsapp for a prompt response.

Whatsapp: + 86 178 0179 9913

Email:michael@gnseparation.com

GN Solids Control is a Chinese company that specializes in the design, manufacturing, and service support of solids control equipment and waste management systems primarily for the oil and gas drilling industry. They are also a major player in the HDD (Horizontal Directional Drilling) and CBM (Coal Bed Methane) sectors.

The company is known for providing integrated solutions to separate solids from drilling fluid (mud), which is critical for efficient drilling operations, environmental protection, and cost reduction.

Key Products and Solutions
GN’s product line covers the entire solids control process, often referred to as the “mud system” or “mud tank system.” Their main equipment includes:

Shale Shakers: The primary and first stage of solids control. They use vibrating screens to remove large drill cuttings from the drilling fluid. GN offers various models, including linear motion and balanced elliptical motion shakers.

Vacuum Degassers: Used to remove entrained gases (like methane or hydrogen sulfide) from the drilling fluid, which is crucial for maintaining mud density and preventing kicks or blowouts.

Desanders & Desilters: Hydrocyclones that serve as the second and third stages of solids control. They remove finer sand and silt-sized particles that the shaker cannot capture.

Decanter Centrifuges: The fourth stage of solids control. These high-speed centrifuges separate ultra-fine particles and are also used for barite recovery (saving expensive weighting material).

Centrifugal Pumps: Used throughout the system to move drilling fluid between different pieces of equipment.

Mud Tanks & Agitators: Custom-designed tanks that hold the drilling fluid, with agitators to keep the fluid homogenous and prevent settling.

Complete Systems: GN integrates all this equipment into a single, skidded or trailer-mounted system, such as:

Mud Cleaning System: Typically includes shakers, degassers, desanders, and desilters.

Complete Solids Control System: Includes all the above plus centrifuges.

Slurry Separation System: For construction and piling projects.

Waste Management Units: Such as cuttings dryers and screw pumps for handling drill cuttings.

For more cases info in detail,find Michael to have a prompt reply.

Whatsapp: + 86 178 0179 9913

Email: michael@gnsolidscontrol.com/michael@gnseparation.com

GN Solids Control is a Chinese manufacturer and global supplier of comprehensive solids control and drilling waste management equipment. The company has grown to become one of the world’s leading providers of equipment for the oil & gas drilling, HDD (Horizontal Directional Drilling), CBM (Coal Bed Methane), and environmental industries.

Their core expertise lies in separating solids from drilling fluid (mud) and managing the resulting waste, which is critical for efficient, safe, and environmentally compliant drilling operations.

Core Products and Solutions
GN’s product line covers the entire process from primary separation to final waste handling. Their key equipment includes:

Shale Shakers: The first line of defense in solids control. GN offers a wide range of shakers, including linear motion and balanced elliptical motion models for different drilling conditions (e.g., fine screen shakers for high-volume liquid separation).

Vacuum Degassers: Used to remove dangerous and destructive entrained gases (like H₂S and CH₄) from the drilling fluid.

Desanders & Desilters: Hydrocyclones that remove fine, abrasive solids (silt and sand) from the mud. Desanders typically handle larger particles (≥ 45 microns), while desilters handle finer ones (≥ 15-25 microns).

Decanter Centrifuges: Critical for recovering barite and removing ultra-fine solids. They offer both high-speed centrifuges (for weighted mud) and large-bowl centrifuges (for unweighted mud).

Centrifugal Pumps: GN manufactures robust sand pumps and mud pumps to move fluid through the entire system.

Key Features and Strengths
Global Presence: GN has a significant international footprint with offices and subsidiaries in key locations like the USA (Houston), Russia, Middle East, and Southeast Asia, supported by a network of local agents and partners. This ensures strong after-sales service and technical support.

Full Product Range: They are a one-stop shop, capable of supplying everything from a single replacement pump to a fully automated, custom-built solids control system.

Focus on R&D: GN invests heavily in research and development to improve the efficiency, reliability, and environmental performance of their equipment.

For more cases detail,find MichaelSong for a prompt reply.

Whatsapp: + 86 178 0179 9913

Email: michael@gnseparation.com/michael@gnsolidscontrol.com

 

Overview of GN Solids Control Co., Ltd.

GN Solids Control is a Chinese company that specializes in the design, manufacturing, and distribution of solids control equipment and waste management systems for the oil & gas drilling, HDD (Horizontal Directional Drilling), CBM (Coal Bed Methane), and environmental industries.

A GN Agitator is a motor-driven mechanical mixer installed in drilling fluid tanks (mud pits) to keep the fluid homogeneous and prevent its components from settling. Its primary purpose is to maintain a uniform consistency in the drilling mud, ensuring that solids (like barite, the weighting material) do not settle out and that all additives are properly suspended.

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1. Key Functions and Importance

In a drilling operation, drilling mud is a critical and complex mixture. If left stagnant, its components will separate, leading to severe operational issues:

• Prevents Solids Settlement: Keeps heavy weighting materials (Barite, Hematite) and drilled cuttings in suspension.

• Maintains Mud Uniformity: Ensures the mud properties (density, viscosity) are consistent throughout the tank, which is crucial for accurate measurement and control.

• Aids in Mixing: Helps incorporate new additives (polymers, chemicals) into the fluid system efficiently.

• Avoids “Dead Zones”: Eliminates stagnant areas in the tank where solids can accumulate and solidify, which are very difficult to remix later.

Without effective agitation, the mud becomes inconsistent, leading to poor wellbore stability, inaccurate mud readings, and potential loss of circulation.

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2. Design and Construction Features (Why GN Agitators Stand Out)

GN agitators are known for their robust and practical design, built for the harsh conditions of drilling rigs.

• Heavy-Duty Gearbox: The heart of the agitator. GN uses a high-torque, helical gearbox designed for smooth operation, high efficiency, and long service life. It is typically filled with high-quality lubricant for maintenance-free operation.

• Robust Impeller (Propeller): The impeller is designed to create a strong axial flow pattern (top-to-bottom circulation) rather than just a vortex. This ensures the entire content of the tank, from top to bottom, is moving. They are often made from abrasion-resistant materials or coated with rubber to withstand the abrasive nature of drilling fluids.

• Structural Steel Construction: The main frame, shaft, and mounting base are built from high-strength steel to handle constant vibration and load.

• Explosion-Proof Motor: GN offers motors certified for hazardous areas (e.g., Ex d, Ex e standards), which is a critical safety requirement on oil and gas rigs where flammable gases may be present.

• Customizable Shaft Length: The shaft connecting the gearbox to the impeller can be customized to fit the specific depth of the customer’s mud tank.

• Effective Sealing System: A high-quality mechanical seal prevents drilling fluid from entering the gearbox, which is vital for preventing failure.

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3. How It Works

The operation is straightforward but effective:

1. The explosion-proof electric motor provides power.

2. The motor turns the input shaft of the heavy-duty gearbox.

3. The gearbox reduces the speed and significantly increases the torque output.

4. This high-torque, low-speed rotation drives the long shaft and the impeller submerged in the mud.

5. The specially designed impeller pushes the fluid axially and radially, creating a controlled, powerful flow that ensures total tank movement and prevents any solids from settling.

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4. Common Applications

• Main Active Tanks: Agitating the primary drilling fluid before it is pumped downhole.

• Suction Tanks: Ensuring the pump receives fluid of consistent density.

• Mixing Tanks: Where new mud is built or chemicals are added.

• Weighting Material Tanks (e.g., Barite Tanks): Preventing the extremely dense barite from settling into a solid, unusable mass.

For the cases details, please find MichaelSong below to have a prompt response.

Whatsapp: + 86 178 0179 9913

Email: michael@gnsolidscontrol.com/michael@gnseparation.com