Introduction
ZHOUSHAN MICROWAVE SCREW MACHINERY CO., LTD. (舟山市微波螺杆机械有限公司) is a Chinese manufacturer of screw barrels and plastic extrusion machinery components based in Zhoushan, Zhejiang, a region widely associated with the country’s screw-and-barrel industry cluster. The company was founded in 1990 and has focused on the production, research, and development of plastic machinery, with product activity centered on planetary screw extruders, conical twin-screw systems, single-screw systems, and related barrel components.
The company presents itself as a specialized production base integrating screw-barrel machining and extrusion equipment manufacturing, with a workshop area of more than 10,000 square meters and a staff of more than 60 employees. Its product range and technical positioning place it within the broader plastics-processing equipment supply chain, particularly in machinery used for PVC processing, pipe and profile extrusion, and other rigid-polymer applications.
History and Development
Founded in 1990, Zhoushan Microwave Screw Machinery Co., Ltd. entered the plastics machinery field during a period when Chinese screw-and-barrel makers were expanding from basic component supply toward more specialized extrusion technologies. The company states that it has continuously introduced foreign screw-machinery technology and manufacturing methods while building its own production capability.
Two development features are especially visible in the company’s public materials:
- Diversification of product formats: the company moved beyond conventional single-screw components to include planetary screw, conical twin-screw, and single-screw product families.
- Export orientation: company materials indicate overseas sales to markets including the United States, Germany, Dubai, Vietnam, and Thailand, suggesting participation in both domestic and international industrial equipment supply chains.
- Specialization in extrusion applications: public descriptions link the company’s machinery to PVC compounding, pipe, sheet, and profile production, which are core end uses in rigid plastics processing.
Business Operations and Segments
Zhoushan Microwave’s operations are concentrated in the manufacture of screw-barrel assemblies and related extrusion systems rather than in broad-scale plastics conversion or polymer production. Based on publicly available product descriptions, the business can be understood in three functional areas:
- Component manufacturing: precision screw and barrel production for extrusion and processing equipment.
- Extrusion machinery: complete or semi-complete planetary, conical twin-screw, and single-screw extruder systems.
- Customized industrial supply: support for OEM customers that require screw-barrel solutions for specific processing lines, particularly in PVC and other rigid materials.
The company is also positioned as a supplier to other machinery makers and plastic-production firms, which makes it part of the upstream equipment ecosystem rather than a consumer-facing plastics brand.
Products and Technologies
Main product families
Public company materials identify the following product groups:
- WB-WE series planetary screw extruders, planetary screws, and planetary barrels.
- SJS series conical twin-screw extruders, twin screws, and twin barrels.
- SJ series single-screw extruders, single screws, and single barrels.
- Specialized screw-barrel sets for foam and other plastic-processing lines, including product references to pearl-cotton/expanded material applications and pipe, sheet, and profile lines.
Technical characteristics
The company’s product descriptions suggest a focus on equipment designed for the demanding conditions of thermoplastic processing, especially where stable plasticization, compression, and wear resistance are required. In the case of conical twin-screw extruders, the design is suited to feeding and plasticizing rigid materials such as hard PVC powder because the tapered screw geometry combines a larger feed opening with the compression and shear needed for processing.
A technical feature emphasized in public materials is the use of 38CrMoALA alloy steel for conical twin screws. This material choice is common in screw and barrel manufacture because it supports wear resistance and processing stability under heat and friction.
The company’s publicly described capabilities indicate competence in:
- Precision machining of screw and barrel components.
- Extrusion-line integration for complete processing systems.
- Wear-focused manufacturing, which is central to long-life performance in plastics-processing equipment.
Applications and End Markets
Zhoushan Microwave’s equipment is associated with several plastics-processing applications, particularly those that rely on screw-based plasticization and extrusion.
Major application areas
- PVC pipe extrusion
- PVC profile production
- Sheet and board extrusion
- Plastic compounding
- Foam and expanded-material processing
- General rigid-plastic processing
The company’s public product descriptions and technical materials indicate strongest relevance in PVC-related extrusion, which is a significant segment of the global plastics machinery market because rigid PVC requires controlled feeding, mixing, and thermal management.
Global Presence and Market Position
The company is headquartered in Zhoushan, Zhejiang Province, within a well-established Chinese manufacturing cluster for screws, barrels, and extrusion equipment. That industrial geography is strategically important because Zhoushan has long been associated with specialized plastics machinery suppliers and subcontractors.
Available materials indicate that the company exports to multiple overseas markets, including the United States, Germany, Dubai, Vietnam, and Thailand, but no verified public source provided a market share figure. On that basis, the company should be understood as a specialized exporter and component manufacturer rather than a diversified multinational plastics conglomerate.
The company is also listed on the ChinaPlas online exhibitor marketplace, reinforcing its participation in the plastics-industry trade-show and industrial-sourcing ecosystem.
Sustainability and Environmental Initiatives
No detailed sustainability report or formal environmental disclosure was identified in the available source set. As a result, the company’s environmental profile cannot be assessed comprehensively from public evidence alone.
That said, the company’s emphasis on energy-efficient industrial screw extrusion systems and technically optimized screw-barrel design suggests an indirect sustainability contribution through machinery that can improve processing efficiency and reduce material waste in plastics manufacturing. This should be treated as an inference from product positioning rather than as a formally documented environmental claim.
Financial Performance and Economic Impact
The available sources do not provide audited revenue, profit, or balance-sheet data for Zhoushan Microwave Screw Machinery Co., Ltd. No reliable public filing in the source set disclosed financial performance metrics.
Its economic impact is best understood through its role in the regional supply chain:
- supporting the plastics machinery cluster in Zhoushan;
- supplying components to extrusion-equipment manufacturers and processors;
- contributing to the export trade in screw-barrel products and related machinery.
Leadership and Corporate Governance
Publicly accessible sources in the provided set identify the company as led by General Manager Cheng Suan in one business directory listing, but they do not provide a full governance structure or board composition. Because this information comes from a directory-style source rather than an official corporate filing, it should be treated cautiously.
No further authoritative governance disclosure was available in the source set.
Innovations and Future Outlook
The company’s development path suggests continued emphasis on specialized extrusion technology, especially for planetary screw and conical twin-screw systems. In industry terms, this aligns with several persistent trends:
- demand for higher wear resistance and longer service life in screw-barrel assemblies;
- continuing use of PVC extrusion in pipes, profiles, and construction-related materials;
- customer preference for tailored component geometry and application-specific processing solutions.
Future growth for the company is likely to depend on its ability to maintain machining precision, adapt materials and surface treatments for harsher processing conditions, and compete in export markets where screw-barrel suppliers are evaluated on durability, consistency, and delivery reliability.
Summary
Zhoushan Microwave Screw Machinery Co., Ltd. is a long-established Zhoushan-based manufacturer specializing in screw barrels, extruders, and related plastics-processing equipment. Founded in 1990, it serves the extrusion sector with product lines centered on planetary, conical twin-screw, and single-screw technologies, with apparent strength in PVC and rigid-plastics applications.
References
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CPS+ eMarketplace. (n.d.). ZHOUSHAN MICROWAVE SCREW MACHINERY CO., LTD.ZHOUSHAN MICROWAVE SCREW MACHINERY CO., LTD.. CPS+ eMarketplace. https://www.chinaplasonline.com/eMarketplace/ExhibitorInfo?CompId=1003117Link