Introduction
WENZHOU BOJING PLASTIC MOULD CO., LTD. (温州博精塑料模具有限公司) is a Zhejiang-based manufacturer specializing in plastic extrusion die heads and related extrusion-line accessories for the plastics processing industry. Established in 1998, the company has focused for more than two decades on tooling and components used in film blowing and plastic extrusion, with production centered in Ruian City, Zhejiang, a major industrial base for plastics machinery and mould manufacturing.
The company’s core business is the manufacture of single-layer and multi-layer co-extrusion die heads for materials including HDPE, LDPE, LLDPE, MDPE, MHDPE, and PP, with product coverage extending to one- to seven-layer die heads according to its official website. It also produces auxiliary extrusion equipment and components such as static mixers, rotating seats, manual screen changers, and long-lasting screen changers, indicating a position not as a general-purpose mould maker but as a specialized supplier to extrusion equipment builders and film producers.
Bojing’s published capabilities emphasize high-precision German CNC machining centers and CNC lathes, which are important for maintaining dimensional accuracy and surface quality in die tooling, both of which directly affect melt distribution, film uniformity, and process stability in blown-film and extrusion applications. The company also states that it exports products globally, including to Canada and the United States, and its Chinaplas exhibitor listing confirms its presence in the international plastics trade-show ecosystem.
History and Development
Bojing states that it was established in 1998 and has “been more than 20 years” producing extrusion machine parts and accessories, especially blown-film die heads. Its development appears to have followed a specialization model rather than broad diversification, with repeated emphasis on extrusion dies and related tooling across its published materials.
Key milestones visible from the available sources include:
- 1998 founding as a plastics tooling and extrusion-parts manufacturer in Ruian, Zhejiang.
- Expansion into multi-layer co-extrusion die head production, including systems described as covering up to one to seven layers on the company homepage.
- Adoption of high-precision CNC machining equipment and export-oriented sales, with overseas markets named on the company profile.
The available sources do not provide a detailed corporate timeline, merger history, or ownership changes, so the company’s development is best understood through its product specialization and manufacturing capability rather than through major restructuring events.
Business Operations and Segments
Bojing operates primarily as a manufacturer of extrusion tooling and accessories rather than as a resin producer or a full-scale plastic machinery assembler. Its operations, as disclosed publicly, can be grouped into the following functional areas:
| Segment | Main offerings | Industrial role |
|---|---|---|
| Extrusion die systems | Single-layer and multi-layer co-extrusion die heads | Forms molten polymer into film or sheet profiles |
| Auxiliary extrusion components | Static mixers, rotating seats | Improves melt homogeneity and process handling |
| Screen-changing systems | Manual screen changers, long-lasting screen changers | Supports filtration and continuous operation |
| Material-specific tooling | HDPE, LDPE, LLDPE, MDPE, MHDPE, PP die heads | Tailors tooling to different polymer rheologies |
The company’s factory is identified at No. 1, Yongning Road, Feiyun New District, Ruian City, Zhejiang, while Chinese government records also identify the enterprise in Feiyun Subdistrict of Ruian. This location places it within one of China’s better-known clusters for plastics machinery, dies, and mould-related manufacturing.
Products and Technologies
Bojing’s principal product category is the blown-film and extrusion die head, a critical component that determines melt flow distribution and final product thickness consistency. The company says it manufactures single-layer and multi-layer co-extrusion die heads, including configurations from one to seven layers on its website, with a profile page also describing one- to five-layer variants.
Key product and technology areas
- Die heads for blown film extrusion**: Designed for polymers such as **HDPE, LDPE, LLDPE, MDPE, MHDPE, and PP.
- Multi-layer co-extrusion tooling: Used where barrier performance, mechanical strength, sealability, or cost optimization requires combining multiple polymer layers.
- Static mixers: Used to improve melt mixing and reduce temperature or composition non-uniformity before the die.
- Screen changers: Intended to remove contaminants from the polymer melt and maintain downstream product quality during extrusion.
The company highlights German CNC machining centers and CNC lathes, which suggests an emphasis on precision machining, repeatability, and wear-resistant tooling manufacture. In practical terms, these capabilities matter because extrusion dies must withstand high temperature, high pressure, and abrasive polymer flow while preserving geometry over long production cycles.
Applications and End Markets
Bojing does not publish a broad end-market breakdown, but its product mix indicates clear exposure to the plastic film extrusion segment and to downstream manufacturers that rely on blown film and co-extruded film structures.
Likely application areas include:
- Packaging film production
- Industrial and utility film
- Multi-layer barrier film
- General-purpose blown film processing
- Polymer-processing lines requiring melt filtration and mixing accessories
Because the company’s tooling is specified for multiple polyolefin grades and polypropylene, it is positioned toward markets where resin choice, layer structure, and film performance are adjusted to application requirements rather than to a single product category.
Global Presence and Market Position
Bojing presents itself as an export-oriented manufacturer with sales “all over the world,” explicitly naming Canada and the United States among its overseas markets. Its exhibitor listing on Chinaplas confirms participation in a major international plastics trade platform, which is relevant for suppliers seeking visibility among extrusion machinery buyers and film manufacturers.
In market-position terms, Bojing appears to be a specialized component supplier within China’s broader plastics machinery ecosystem rather than a vertically integrated multinational. Its competitive identity is built on precision tooling, extrusion expertise, and product specialization rather than on large-scale mass production or broad product diversification.
Sustainability and Environmental Initiatives
The available public sources do not describe a formal sustainability strategy, emissions targets, recycling program, or certified environmental management system. As a result, any assessment of environmental performance must remain limited to the nature of the company’s products and the broader industry context.
From an industry perspective, extrusion tooling suppliers such as Bojing can contribute indirectly to sustainability by enabling:
- Material efficiency through more stable film thickness control
- Process efficiency through better melt distribution and reduced scrap
- Potential downgauging in multi-layer film structures, depending on customer process design
These are functional inferences based on the technical role of the company’s products rather than explicit claims made in its published materials.
Financial Performance and Economic Impact
Bojing does not publish detailed financial statements, revenue figures, or profit data in the sources reviewed. Without audited financial disclosures, its economic scale cannot be quantified reliably.
Its economic impact is nonetheless evident in a narrower industrial sense: the company contributes to the supply chain for plastics extrusion equipment, supporting film producers, machinery integrators, and regional manufacturing networks in Zhejiang and export markets abroad. Its presence also reflects the importance of Ruian and surrounding Wenzhou-area industrial clusters in China’s plastics machinery ecosystem.
Leadership and Corporate Governance
The publicly available sources reviewed do not provide a full leadership roster, board composition, or governance framework. The company’s materials present it primarily as a privately operated manufacturing enterprise, with contact details and factory information but little disclosure on management structure.
In the absence of formal governance disclosures, it is only possible to say that Bojing operates as a conventional industrial manufacturer with a clear product focus and export orientation.
Innovations and Future Outlook
Bojing’s published materials suggest that its innovation efforts have centered on incremental tooling development rather than on radical product diversification. The move from basic extrusion components to multi-layer co-extrusion die heads and supporting accessories indicates adaptation to higher-performance film structures and more demanding processing conditions.
Future prospects for a company in Bojing’s position are likely tied to several industry trends:
- Continued demand for multi-layer packaging films
- Ongoing need for precision machining in extrusion tooling
- Greater focus on process stability, scrap reduction, and energy efficiency
- Export competition from other Chinese and international die and mould suppliers
Its participation in Chinaplas and its overseas market references suggest that the company is positioned to continue serving both domestic and foreign customers in the extrusion equipment supply chain.
Summary
WENZHOU BOJING PLASTIC MOULD CO., LTD. is a long-established extrusion die and accessory manufacturer rooted in Zhejiang’s plastics machinery cluster. Its business is centered on blown-film die heads, multi-layer co-extrusion tooling, and related extrusion components, supported by precision CNC manufacturing and export activity.
References
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CPS+ eMarketplace. (n.d.). WENZHOU BOJING PLASTIC MOULD CO., LTD.WENZHOU BOJING PLASTIC MOULD CO., LTD.. CPS+ eMarketplace. https://www.chinaplasonline.com/eMarketplace/ExhibitorInfo?CompId=1011249Link