Introduction
Nanjing Haisi Extrusion Equipment Co., Ltd. is a Chinese manufacturer of plastic processing machinery based in Nanjing, Jiangsu Province, with a business profile centered on single-screw extruders, co-rotating twin-screw extruders, two-stage extruders, compounding lines, and auxiliary pelletizing equipment. Founded in 2008, the company positions itself as a high-tech extrusion specialist serving the masterbatch, plastic modification, recycling, and compounding segments of the plastics industry, including project delivery for turn-key production lines.
The company’s technical focus is on equipment used to transform polymers, additives, fillers, and recycled feedstocks into compound pellets or other process-ready materials, a core step in the plastics value chain. Its stated product scope includes twin-screw pelletizing systems, single-screw granulation systems, two-stage mixing extruders, conical twin-screw extruders, high-speed mixers, crushers, feeders, and pelletizers, reflecting a broad process-integration model rather than a narrow machine-only offering.
History and Development
Nanjing Haisi Extrusion Equipment Co., Ltd. was established in 2008 and developed as a machinery supplier focused on extrusion, mixing, and granulation systems for plastics processing. Company descriptions consistently emphasize that the business was built by a team with long-standing experience in R&D, manufacturing, sales, and service in the extruder industry.
A second development milestone is the company’s expansion from core extrusion machines into complete production lines and related technologies, including integrated equipment packages and turn-key project delivery. This indicates a shift from supplying individual machines to providing system-level solutions for industrial customers that require matched feeding, mixing, extrusion, cooling, and pelletizing stages.
A third marker in its development is the addition of broader commercialization channels and export-oriented listings on industrial marketplaces, where the company is represented with products spanning twin-screw extruders, recycling lines, mixers, dryers, and laboratory-scale equipment. These listings suggest a portfolio designed to serve both standard production needs and customized applications.
Business Operations and Segments
The company operates as a manufacturer of extrusion and compounding equipment, with its headquarters and production base in Lishui Economic Development Zone, Nanjing. Its business model combines equipment manufacturing with process design, technical support, and after-sales service.
Its main operational segments include:
- Extrusion machinery
- Compounding and pelletizing systems
- Auxiliary mixing and handling equipment
- Turn-key production lines
- OEM and customized equipment services
The firm also presents itself as capable of adapting machine configuration to different material systems and process requirements, which is important in plastics processing where formulations vary widely by resin type, filler loading, viscosity, and thermal sensitivity.
Products and Technologies
Nanjing Haisi’s product range is organized around the conversion of raw polymers and additives into uniform compounds, granules, or recycled pellets. Its principal equipment categories include:
- Co-rotating twin-screw extruders
- Single-screw extruders
- Two-stage extruders
- Conical twin-screw extruders
- Masterbatch and compounding pelletizing lines
- Hot-cut, strand, air-cooling, and water-ring pelletizing systems
- High-speed mixers, vertical mixers, crushers, and dryers
Technical listings and company descriptions show that the company supplies machinery for masterbatch production, plastic modification, recycling, PVC compounding, color-dosing, and filler loading. One published industry summary attributes to the company a TSE-75D twin-screw system for filler masterbatch production with a reported throughput in the 500–800 kg/h range for a specific configuration, illustrating the company’s focus on medium-scale industrial compounding applications.
The company’s equipment set is consistent with common extrusion-process architecture in which solids are metered, melted, mixed under controlled shear, degassed if necessary, and then pelletized for downstream use. In practical terms, this type of machinery is used to improve dispersion, batch consistency, and processing stability in polymer compounds, especially where fillers, pigments, or recycled material are involved.
Applications and End Markets
The company’s machinery is directed primarily at the following application areas:
- Masterbatch production
- Plastic compounding and modification
- Plastic recycling and pelletizing
- PVC processing
- Engineering plastics and filled compounds
- Coloring and dyeing compounds
- Laboratory and small-scale development lines
These applications place the firm within upstream and midstream plastics manufacturing, where extrusion equipment is used to prepare materials for later conversion into molded, sheet, pipe, cable, automotive, appliance, and packaging products. Its product descriptions also reference recycled plastics and scrap pelletizing, aligning the company with the circular-economy segment of plastics processing.
Global Presence and Market Position
Nanjing Haisi markets itself internationally through English-language corporate pages and third-party B2B platforms, and its company profiles indicate export activity beyond China. One professional profile states that its machines have been exported to 20 countries and regions, while marketplace listings show product promotion to overseas buyers.
The company is described across several platforms as a high-tech enterprise or high-tech manufacturer, and some listings associate it with CE and ISO 9001 quality management references. In the plastics machinery sector, this type of positioning is important because buyers often require documentation of manufacturing controls, conformity practices, and customization capability before placing orders for process-critical lines.
Research and Development
The company repeatedly emphasizes R&D-driven design, with an internal approach that links machine structure, process conditions, and electromechanical integration. This is particularly relevant in twin-screw and compounding extrusion, where screw geometry, barrel configuration, feeding strategy, temperature control, and venting must be matched to the formulation.
Its technical messaging suggests a focus on:
- Structural optimization of mixing equipment
- Process-specific design
- Customized line configuration
- Integration of mechanical and control systems
This approach is consistent with the requirements of compounders and recyclers, who often need equipment tuned to viscosity, filler content, moisture sensitivity, and throughput targets.
Sustainability and Environmental Initiatives
The company’s strongest environmental connection is its activity in plastic recycling extrusion and pelletizing, which supports the reuse of polymer waste and scrap feedstocks. Its product lineup includes recycling-oriented lines, pelletizers, and compounding systems that can be applied to recovered materials, which places it within the industrial infrastructure used to process post-industrial and some post-consumer plastics.
At the same time, its portfolio also includes machinery for conventional plastics conversion, including masterbatch and additive compounding, which remain central to industrial plastics supply chains. The company’s public materials emphasize efficiency, durability, and economical power consumption, reflecting performance priorities that are relevant to energy use in extrusion operations.
Quality Management and Certifications
Third-party supplier profiles reference CE, ISO 9001, and TÜV certification claims for the company or its products, indicating that quality and conformity are part of its market presentation. The company’s own materials also highlight manufacturing capability supported by equipment such as CNC machining centers, grinding machines, lathes, milling machines, and cutting and bending machinery, which are commonly associated with precision fabrication in machine-building operations.
Innovations and Future Outlook
Nanjing Haisi’s business direction is aligned with several broader trends in plastics machinery: greater use of recycled polymers, higher demand for compounded specialty materials, and customer preference for integrated, turn-key production lines. Its combination of single-screw, twin-screw, and auxiliary equipment gives it flexibility across multiple processing regimes, from basic granulation to more demanding reactive or filled compounding tasks.
Future competitiveness in this segment is likely to depend on the company’s ability to refine process control, improve energy efficiency, expand custom engineering, and maintain consistent manufacturing quality as demand grows for recycled and engineered plastic compounds.
References
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CPS+ eMarketplace. (n.d.). NANJING HAISI EXTRUSION EQUIPMENT CO., LTD.NANJING HAISI EXTRUSION EQUIPMENT CO., LTD.. CPS+ eMarketplace. https://www.chinaplasonline.com/eMarketplace/ExhibitorInfo?CompId=1034498Link