Introduction
NANJING KELAN PLASTIC MACHINERY CO., LTD. is a Chinese plastics machinery manufacturer based in Nanjing, Jiangsu, that focuses on twin-screw extrusion and pelletizing equipment, related single-screw extrusion systems, and core wear parts such as screws, barrels, kneading elements, and screw elements. Company materials describe it as an integrated enterprise covering research and development, design, production, sales, and export services, with a product portfolio oriented toward polymer compounding, modification, and granulation applications. Its exhibitor listing on ChinaPlasOnline identifies the company as a specialized and innovative enterprise in China, indicating recognized status within the domestic industrial classification framework.
The company’s technical identity is centered on co-rotating parallel twin-screw extruders and supporting components that are critical to plastics compounding lines, where mixing intensity, residence time, and wear resistance strongly affect product quality and process stability. Its catalog includes laboratory, pilot, and production-scale machines such as the H-20/26 water-cooled strand pelletizing extruder, H-50D high-output twin-screw pelletizer, H-75 ultra-high-capacity twin-screw extruder, and specialized models for materials including PEEK. This positioning places the company in a segment of the plastics equipment industry that serves compounders, material developers, and processors needing controlled melt blending, reactive extrusion, and pellet production.
History and Development
Publicly available company information indicates that Nanjing KELAN was established in 2010 and developed in Jiangning District, Nanjing, as a specialist plastics extrusion equipment maker. Over time, the company expanded beyond complete machines into the manufacture of precision screws, barrels, and modular elements, which are important consumables and replacement parts in extrusion systems.
A second development milestone was the building of an in-house technical capability around mechanical design, electrical automation, process development, and commissioning, supported by computer-aided design tools and dedicated production and testing facilities. This suggests a move from basic fabrication toward more integrated equipment engineering and application support.
A third milestone is the company’s stated ability to design and manufacture custom screw and kneading-element geometries, including single-key, symmetric key, internal spline, internal octagonal, internal hexagonal, involute spline, and cross-key profiles, with on-site measurement services for customer specifications. That capability is particularly relevant in the extrusion industry because screw geometry strongly influences conveying, mixing, devolatilization, and shear generation.
Business Operations and Segments
Nanjing KELAN operates in several closely related segments of the plastics machinery supply chain.
- Complete extrusion and pelletizing lines
- Twin-screw extruders
- Single-screw extruders
- Modification and biodegradable plastics granulation lines
- Spare parts and consumables for extruders
- Engineering support, installation, commissioning, and after-sales service
Its business model combines equipment manufacturing with component supply, which can create recurring demand for replacement parts and technical service over the life of an extrusion line. This structure is common among specialist plastics machinery firms because wear components such as screws and barrels often require periodic replacement in abrasive or filled-polymer applications.
The company also states that it holds import and export qualifications for goods and technology, supporting sales beyond the domestic market. Public descriptions further indicate service coverage across multiple Chinese provinces and an ability to support domestic and international projects.
Products and Technologies
Nanjing KELAN’s product line is built around extrusion-based compounding and granulation.
Main equipment categories
- Twin-screw pelletizing extruders for polymer compounding and modified material production
- Single-screw extruders for extrusion applications and related processing lines
- Laboratory and teaching extruders for experimentation and training, including compact H-20 series machines
- Production-scale high-capacity extruders such as H-50D and H-75 models
- Water-cooled strand pelletizing systems and other pelletizing configurations
- Custom screws, barrels, and kneading elements for rebuilds, upgrades, and machine integration
Technical characteristics
The company states that its screw elements and kneading elements are made from high-speed steel W6Mo5Cr4V2 and nitrided steel 38CrMoAlA, materials commonly used in extrusion equipment for hardness, wear resistance, and service life under high temperature and abrasive processing conditions. The use of custom profiles and multiple connection types indicates a parts business designed to fit diverse extruder platforms and process conditions.
Its machine portfolio also suggests coverage from small-scale laboratory systems to high-throughput industrial machines, which is important for polymer development workflows that begin with formulation trials and scale up to commercial production. The mention of a model for PEEK indicates capability in engineering thermoplastics processing, a more demanding application because of the material’s high melt temperature and process sensitivity.
Applications and End Markets
The company’s equipment is primarily used in plastic compounding and pelletizing, particularly where resins require blending, reinforcement, modification, or conversion into uniform pellets for downstream processing.
Key application areas include:
- Polymer modification
- Filled and reinforced plastics
- Biodegradable plastics
- Engineering plastics processing
- Laboratory formulation and teaching
- Pellet production for downstream injection molding, extrusion, and compounding
Because twin-screw extrusion is widely used for mixing additives, pigments, fillers, stabilizers, and functional compounds, equipment suppliers such as Nanjing KELAN serve customers in resin development and materials engineering as well as in routine pellet production. The company’s product range suggests relevance to processors that need flexible handling of varied formulations rather than only standardized high-volume production.
Global Presence and Market Position
Company materials state that Nanjing KELAN serves both the domestic Chinese market and export markets, reflecting the international reach that many Chinese plastics machinery suppliers have developed in recent years. Its ability to provide custom-engineered components and full line support may be an advantage in price-sensitive markets where localized service and spare-part availability matter.
Within the plastics machinery sector, the company appears to occupy the niche of a specialist extruder and parts manufacturer rather than a broad-based conglomerate. That positioning places it in competition with other domestic Chinese machine builders and with foreign suppliers serving compounding, recycling, and engineering-plastics applications.
Sustainability and Environmental Initiatives
The available materials do not provide detailed public reporting on emissions targets, life-cycle metrics, or formal ESG disclosures. However, the company’s stated involvement in biodegradable plastics granulation lines indicates participation in an area of the industry aligned with the growing demand for alternative polymer materials.
In broader industrial terms, extrusion equipment can support sustainability objectives by enabling the production of recycled, bio-based, or biodegradable compounds, as well as by improving process efficiency and reducing scrap through better mixing and pellet uniformity. On the evidence currently available, Nanjing KELAN’s sustainability profile is better understood through its product applications than through formal environmental reporting.
Financial Performance and Economic Impact
No audited revenue figures, profit data, or capital market disclosures were available in the provided sources. The company therefore cannot be assessed reliably on financial scale from the available public material alone.
Its economic contribution appears to come from the manufacture of capital equipment and high-value spare parts for the plastics processing industry, an area that supports downstream polymer production, compounding, and conversion activity. By supplying both machines and wear components, the company participates in the maintenance and modernization cycle of extrusion plants, which is economically important for processors seeking to extend equipment life and maintain throughput.
Leadership and Corporate Governance
Public source material identifies Sun Guiguo as general manager and indicates that the company has built a dedicated team spanning mechanical design, electrical automation, process development, and installation services. Beyond that, detailed governance information such as board structure, ownership, or audited management reporting was not available in the supplied sources.
Innovations and Future Outlook
Nanjing KELAN’s most visible innovation pathway lies in the combination of custom screw-element engineering and application-specific extrusion systems. In extrusion technology, the ability to tailor screw geometry and barrel configurations is central to improving dispersion, mixing intensity, output stability, and processing window across different polymers.
Its laboratory and high-capacity product mix suggests continued relevance in markets that need both R&D-scale validation and commercial-scale production. Future demand may be shaped by three broader industry trends:
- greater use of specialty and engineering plastics
- continued expansion of biodegradable and modified materials
- ongoing demand for upgraded compounding and pelletizing lines in Asia and export markets
Summary
Nanjing KELAN Plastic Machinery is a specialist plastics extrusion equipment manufacturer focused on twin-screw and single-screw systems, pelletizing lines, and precision replacement parts. Its technical profile, custom component manufacturing, and service-oriented model position it within the segment of the plastics machinery industry that supports polymer compounding, modification, and granulation across laboratory and industrial scales.
References
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CPS+ eMarketplace. (n.d.). NANJING KELAN PLASTIC MACHINERY CO., LTD.NANJING KELAN PLASTIC MACHINERY CO., LTD.. CPS+ eMarketplace. https://www.chinaplasonline.com/eMarketplace/ExhibitorInfo?CompId=1022463Link