Introduction
Sichuan Kunwei Langsheng Extrusion Intelligent Equipment Co., Ltd. (四川坤威朗盛挤出智能装备有限公司) is a Chinese manufacturer of high-performance extrusion equipment focused on twin-screw extrusion systems, complete production lines, spare parts, and related engineering services for the plastics, pharmaceutical, and fine chemical sectors. The company is headquartered and operates its main production base in Dujiangyan, Chengdu, Sichuan, with additional offices and an experimental demonstration center in Changzhou, Dongguan, and Yuyao, giving it a domestic service network oriented toward customer support, commissioning, and after-sales coverage.
Kunwei Langsheng’s product positioning centers on high-torque twin-screw extruders and turnkey extrusion solutions for applications such as masterbatch, modified engineering plastics, TPU reactive extrusion, lithium battery separator film, bi-oriented film, and pharmaceutical hot-melt extrusion. Its published technical claims emphasize high specific torque, high screw speed, wear- and corrosion-resistant materials, and intelligent control functions, indicating a focus on demanding compounding and processing environments where output stability, mixing intensity, and process repeatability are critical.
The company appears in Chinese official and industry listings as a science-and-technology-oriented small and medium-sized enterprise and a specialized, refined, distinctive, and innovative enterprise in Sichuan, underscoring its positioning as a niche equipment supplier rather than a large diversified machinery group. Its brand identity and product literature also suggest a strong emphasis on customized line integration, equipment selection support, plant layout assistance, and trial runs, which are common differentiators in the extrusion machinery market.
History and Development
Kunwei Langsheng presents itself as a company with more than ten years of industry experience in extrusion-related machinery, electrical engineering, and line integration. The available records indicate that it was registered in 2002 according to one business profile source, although company-branded materials mainly highlight later industrial development rather than a detailed founding narrative.
A significant development milestone is the establishment of a multi-site operating structure centered on its Dujiangyan manufacturing base, supplemented by offices in East and South China and an experiment/display center in Changzhou. This network appears designed to support sales, technical service, and customer trials across the company’s principal domestic markets.
Another notable milestone is the company’s expansion from standalone equipment supply into complete production line design and customization, especially for blending and modification applications. Its product and application pages describe one-stop customized extrusion production lines, supporting systems, and spare parts management, indicating an evolution from machine manufacture toward broader process-engineering services.
Official and local-government listings also show the company being recognized in 2025 as a high-tech enterprise candidate and a specialized SME, suggesting ongoing formal recognition of its technology-oriented development path.
Business Operations and Segments
The company’s business is organized around three closely related areas:
- Extrusion machinery manufacturing
- Complete line engineering and customization
- Spare parts and after-sales service
Its customer-facing materials emphasize supply of single machines as well as integrated extrusion production lines, with supporting services that include machine selection guidance, plant layout assistance, and trial runs with customer samples. This indicates a business model that combines capital equipment sales with technical consulting and lifecycle support.
The company states that it serves domestic users in:
- Chemical processing
- Pharmaceutical and medical applications
- Compounding and modification of polymers
Its service network in Sichuan, Jiangsu, Guangdong, and Zhejiang supports regional coverage for these industries.
Products and Technologies
Kunwei Langsheng’s core product offering is the high-torque twin-screw extruder, a machine type widely used in compounding, reactive extrusion, devolatilization, and materials modification. The company’s published specifications and product families include:
| Product line | Key characteristics | Typical use |
|---|---|---|
| KTS High Performance Series | Specific torque of 14 N·m/cm³; positioned as a balance of performance and cost efficiency | Modified engineering plastics, high-viscosity materials |
| KTS Pharmaceuticals HME Series | Specific torque of 9 N·m/cm³; dedicated to pharmaceutical and medical hot-melt extrusion | Pharmaceutical and medical extrusion |
| Custom extrusion production lines | Tailored system integration, process and logistics design, interface matching | End-to-end production line projects |
| Spare parts and support systems | Dynamic inventory management, traceability of key components, fast response | Maintenance and uptime support |
The company also states broader performance features including:
- Specific torque up to 16 N·m/cm³ in certain configurations
- Maximum screw speed of 1200 rpm
- Maximum process temperature of at least 450°C
- Wear- and corrosion-resistant materials
- Strict heat treatment
- High-precision assembly
- Automatic temperature control and intelligent operation functions
In practical extrusion terms, those characteristics are relevant to material mixing intensity, residence-time control, thermal stability, and processing of abrasive or heat-sensitive formulations. The company’s literature suggests that it targets applications requiring both high throughput and stable product quality, especially where compounded polymers or pharmaceutical melts require controlled shear and temperature management.
The company also advertises a broad equipment range with screw diameters from 8 mm to 177 mm, which indicates coverage from laboratory or pilot-scale development through industrial-scale production.
Applications and End Markets
Kunwei Langsheng explicitly identifies several application sectors for its extrusion systems:
- Lithium battery separator film
- Bi-oriented film
- Masterbatch
- TPU reactive extrusion
- Special engineering plastics
- Pharmaceutical hot-melt extrusion
These applications sit in different segments of the polymer processing industry. Masterbatch and engineering plastics production require strong dispersive and distributive mixing, while TPU reactive extrusion and pharmaceutical hot-melt extrusion place greater emphasis on process control, temperature stability, and formulation consistency.
The company’s materials indicate that it serves customers involved in compounding, modification, fine chemicals, and pharmaceutical processing, with its customized line design services intended to adapt equipment to specific recipes, capacities, and downstream requirements.
Global Presence and Market Position
Publicly available evidence indicates that Kunwei Langsheng is primarily a domestic Chinese industrial equipment supplier with a regional service footprint rather than a multinational producer. Its offices in Changzhou, Dongguan, and Yuyao, together with a demonstration center in Changzhou, appear intended to improve responsiveness across major plastics-processing regions in China.
The company’s market position is best understood as specialized and application-focused. Industry listings classify it as a niche manufacturer, and official SME and high-tech-related records suggest recognition for technical specialization rather than scale. Its portfolio and messaging align with customers seeking customized extrusion solutions rather than standardized commodity machinery.
Sustainability and Environmental Initiatives
The available sources do not provide a detailed corporate sustainability report or quantified emissions program for the company itself. As a result, any discussion of its environmental position must remain limited to the nature of its equipment and markets.
Its focus on process efficiency, high torque, intelligent control, and customized line design may support material efficiency and operational optimization in customer plants, but that is an inference from product characteristics rather than a formally published sustainability claim. The company’s product pages do not present detailed information on recycling, carbon targets, or lifecycle assessment.
Financial Performance and Economic Impact
No audited revenue, profit, or export-volume figures were available in the provided sources. The clearest indicators of economic scale are its classification as a small or medium-sized enterprise, a reported registered capital figure in one business profile, and the presence of multiple production and service sites.
Its economic relevance lies in supplying process equipment for sectors that are important to China’s plastics and materials value chain, including compounding, battery materials, specialty polymers, and pharmaceutical processing. By offering customized extrusion systems and after-sales support, the company contributes to downstream manufacturing capability in these sectors.
Leadership and Corporate Governance
The provided sources do not identify a full leadership team or governance structure in detail. Public-facing materials refer to management and technical staff, including chemical machinery and electrical engineers, but do not offer a complete board or executive profile.
The company’s operational emphasis suggests a technically led organization with engineering-centered decision-making, which is common among specialized machinery manufacturers in the plastics processing sector.
Innovations and Future Outlook
Kunwei Langsheng’s innovation profile appears centered on equipment performance optimization, smart control, and line customization rather than on disruptive new polymer technologies. Its published focus on intelligent control systems, automatic temperature control, and high-precision assembly indicates that it is pursuing incremental engineering improvements aimed at process stability and adaptability.
The company’s future prospects are likely tied to several industry trends:
- Continued demand for high-performance compounding equipment
- Growth in battery materials and specialty polymer processing
- Greater interest in pharmaceutical hot-melt extrusion
- Customer demand for automation, traceability, and integrated line services
Its recognition as a specialized and technology-oriented SME may support further product development and market differentiation, particularly if it continues to expand technical service capability and application-specific line integration.
Summary
Sichuan Kunwei Langsheng Extrusion Intelligent Equipment Co., Ltd. is a niche Chinese extrusion machinery supplier centered on high-torque twin-screw extruders, customized production lines, and technical support services for plastics, pharmaceutical, and fine chemical applications. Its regional service network, application-specific product families, and official recognition as a specialized technology enterprise position it as a focused equipment maker within China’s broader plastics processing ecosystem.
References
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CPS+ eMarketplace. (n.d.). SICHUAN KUNWEI LANXESS EXTRUSION INTELLIGENT EQUIPMENT CO., LTD.SICHUAN KUNWEI LANXESS EXTRUSION INTELLIGENT EQUIPMENT CO., LTD.. CPS+ eMarketplace. https://www.chinaplasonline.com/eMarketplace/ExhibitorInfo?CompId=1025381Link