Introduction
Zhoushan Jinze Plastic Machinery Co., Ltd. (舟山市劲泽塑料机械制造有限公司) is a Chinese manufacturer specializing in screw barrels, twin-screw extruder components, and related plastic machinery for extrusion and injection molding applications. Founded in Zhoushan, Zhejiang, in 1999, the company describes itself as one of the earlier domestic producers of twin-screw barrels in China and has since expanded from serving small PVC processors into export-oriented supply of customized wear- and corrosion-resistant solutions.
The company’s product range has broadened from conical twin-screw barrels to parallel twin-screw barrels, single-screw barrels for extruders and injection molding machines, twin-screw main extruders, and PVC compounding and granulating lines. Its market position is shaped by a specialization in screw-geometry adaptation, process troubleshooting, and after-sales support such as training and installation, which are central to equipment performance in plastic compounding and extrusion.
History and Development
Zhoushan Jinze was established in 1999 in Zhoushan city, an area widely associated with China’s plastic machinery cluster and screw-barrel manufacturing base. In its early years, the company focused on supporting small-scale PVC product manufacturers, tailoring screw designs to material formulations and operating conditions to improve product quality.
Over time, the company broadened its technical and commercial scope in at least three visible stages:
- It moved from a narrow emphasis on twin-screw barrels to a wider portfolio including single-screw, parallel twin-screw, and complete PVC compounding/granulating lines.
- It expanded from domestic service work into overseas markets, presenting itself as a modern company with an export-oriented business.
- It added service capabilities such as wear and corrosion solutions, installation, and training, indicating a shift from component supply toward application support.
Its appearance in the Chinaplas eMarketplace exhibitor listing confirms its ongoing participation in the plastics industry’s trade and exhibition ecosystem.
Business Operations and Segments
The company appears to operate as a specialist machinery-component manufacturer, with its core business centered on precision parts used in polymer processing equipment. Its main activity is the design and manufacture of screw-barrel assemblies, which are critical to melting, conveying, mixing, and pressurizing polymer materials during extrusion or injection molding.
Main business areas
- Screw barrels for extruders
- Screw barrels for injection molding machines
- Twin-screw main extruders
- PVC compounding and granulating lines
- Process optimization and retrofit services
- Installation and training support
The company also indicates stock availability for semi-finished products of certain conical twin-screw barrel models, including compatibility references to equipment such as JWELL, LIANSU, and KANGDA. That suggests participation in both standardized replacement-part supply and customized engineering work.
Products and Technologies
Zhoushan Jinze’s product portfolio is built around screw-and-barrel technology, a key mechanical subsystem in plastic processing machinery.
Core product types
- Conical twin-screw barrels
- Parallel twin-screw barrels
- Single-screw barrels
- Twin-screw main extruders
- PVC compounding and granulating lines
Technical focus
The company states that it designs screw structures according to customers’ material ingredients and production conditions, then optimizes existing screw designs for higher process suitability. In practical terms, this kind of engineering affects:
- Melt quality
- Mixing efficiency
- Output stability
- Wear resistance
- Corrosion resistance
Its emphasis on wear and corrosion solutions suggests a materials and surface-engineering approach relevant to abrasive or chemically aggressive formulations, particularly in PVC processing. Because screw barrels operate under intense mechanical load and thermal stress, customization in geometry and metallurgy is often decisive for service life and throughput consistency; the company’s positioning reflects this industry reality.
Applications and End Markets
Zhoushan Jinze’s documented application base is concentrated in PVC-related processing, especially where extrusion and compounding require accurate screw configuration. More broadly, the company’s technologies are relevant to processors using:
Its early customer base consisted of small-scale companies producing various PVC products, and its current export focus suggests a broader range of industrial buyers that require replacement parts, custom screw designs, or complete line components.
Global Presence and Market Position
The company presents itself as an exporter and a participant in international plastics trade events. Its inclusion in the Chinaplas exhibitor platform indicates visibility in a major industry marketplace, while third-party trade data and buyer records show that its products have reached foreign customers in multiple markets.
Within the global plastics machinery ecosystem, Zhoushan Jinze appears to occupy a specialized midstream niche rather than a full-line machine-builder role. Its competitive position is tied to:
- Customization capability
- Replacement-part responsiveness
- Application-specific engineering
- Compatibility with established Chinese and international equipment platforms
This niche is important in plastics processing because screw-barrel wear, material changes, and process upgrades often require tailored component replacement rather than full machine replacement.
Sustainability and Environmental Initiatives
Publicly available information does not show a detailed sustainability program, environmental reporting framework, or formal emissions targets for the company in the sources reviewed. However, several aspects of its business model are indirectly relevant to industrial sustainability:
- Equipment optimization can improve process efficiency and reduce scrap.
- Wear-resistant and corrosion-resistant solutions can extend component life and lower replacement frequency.
- Retrofit and customization services can support equipment reuse rather than full replacement.
These points are inferential rather than explicitly stated as environmental policy, and they should be understood as operational implications of the company’s engineering focus.
Financial Performance and Economic Impact
No audited financial statements or revenue figures were identified in the available sources. The company therefore cannot be reliably profiled on turnover, margins, or market share from the information reviewed.
Its economic impact is more visible at the industrial level:
- It contributes to the local machinery cluster in Zhoushan.
- It supports downstream PVC and plastics processors through specialized component supply.
- It participates in the export of Chinese plastics machinery parts, reinforcing regional manufacturing supply chains.
Leadership and Corporate Governance
The sources reviewed do not provide a detailed board structure, ownership breakdown, or named executive leadership in formal company filings. Public-facing material indicates a privately operated manufacturing company with commercial and technical staff involved in export sales and customer support.
Innovations and Future Outlook
The company’s development trajectory suggests continued emphasis on process-specific screw geometry, customer-specific material adaptation, and after-sales engineering support. These capabilities are important in a plastics industry facing:
- More demanding material formulations
- Pressure for higher energy and process efficiency
- Greater need for longer component life
- Ongoing demand for replacement parts and retrofits
Its future prospects are likely to depend on the same factors that have shaped its growth so far: technical customization, reliability in wear-intensive applications, and the ability to serve both domestic and international plastics processors.
Summary
Zhoushan Jinze Plastic Machinery Co., Ltd. is a Zhoushan-based plastics machinery manufacturer focused on screw barrels, twin-screw extruder components, and PVC processing lines. Founded in 1999, it has evolved from a local supplier to a company with export activity, trade-fair visibility, and a product strategy built around customization, wear resistance, and process support.
References
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CPS+ eMarketplace. (n.d.). ZHOUSHAN JINZE PLASTIC MACHINERY CO., LTD.ZHOUSHAN JINZE PLASTIC MACHINERY CO., LTD.. CPS+ eMarketplace. https://www.chinaplasonline.com/eMarketplace/ExhibitorInfo?CompId=1013287Link