Introduction
DALIAN SUNLIGHT TECHNOLOGY CO., LTD. is a Chinese plastics machinery manufacturer based in Dalian, Liaoning Province, best known for its plastic corrugated pipe extrusion equipment and related processing technologies. Founded in 1993 and publicly listed in 2011, the company has built its business around the manufacture and technical development of machinery for single-wall and double-wall corrugated pipe production, while also extending into five-axis machining centers and customized material-processing equipment.
The company operates from the Dalian Hi-tech Zone and reports a strong manufacturing base supported by significant in-house machining capacity, a large employee base, and a product portfolio oriented toward high-speed, energy-efficient extrusion lines for underground pipe systems. In the plastics industry, it is positioned as a specialized equipment supplier serving pipe processors that require production lines for PP, HDPE, and PVC corrugated pipe, including larger-diameter applications and high-output industrial configurations.
History and Development
Dalian Sunlight Technology traces its origins to 1993, when it was established in Dalian. By the company’s own description, it had accumulated more than two decades of experience in the development of plastic corrugated pipe equipment and related process know-how.
A second major milestone came in 2011, when the company went public, marking a transition from a specialized industrial manufacturer into a listed enterprise with a broader capital-market profile.
From 2012 onward, the company expanded beyond plastics machinery into high-end five-axis linkage machine tools, including vertical cradle five-axis machining centers and vertical-horizontal convertible five-axis machining centers, together with related composite manufacturing equipment. This diversification suggests a strategy of leveraging precision-engineering capabilities developed in plastics machinery into adjacent industrial equipment markets.
Business Operations and Segments
The company’s business can be understood in two main segments:
- Plastics extrusion equipment: Its core business remains machinery for corrugated pipe production, especially single-wall and double-wall pipe lines.
- Precision machinery and machining systems: Since 2012, the company has developed five-axis machine tools and customized material-addition and material-removal equipment.
Operationally, Dalian Sunlight reports two production bases in Dalian and Shanghai, with a manufacturing area of about 80,000 square meters and more than 400 employees. It also states that its processing center includes over 100 machine tools from international brands such as Mazak, DMG, Mori Seiki, Mitsubishi, and Kurashiki, and that around 90% of processing is performed in-house.
Products and Technologies
The company’s plastics machinery portfolio is centered on corrugated pipe extrusion lines and related auxiliary systems. Key technical capabilities described by the company include:
- Double-wall belling
- Corrugated pipe perforating
- Mold block cooling
- Corrugator random belling
- Double cutter control
- HDPP single-wall pipe manufacturing
- Extra-small elastic corrugated pipe production
- Horizontal corrugator design
Its 630H/800H/1000H high-speed corrugated pipe production lines are described as faster and lower in power consumption than traditional production lines. Exhibitor material also indicates that the company’s extrusion lines can produce single-wall and double-wall pipes from 16 mm up to 1850 mm, indicating coverage from smaller utility products to large-diameter underground pipe systems.
Reported exhibit products at international trade fairs have included models such as SBZ800H and SBZ630H, reflecting the company’s emphasis on standardized production-line platforms.
Applications and End Markets
The company’s main markets are downstream processors and infrastructure-related users of corrugated pipe systems. Based on its product profile, its equipment serves applications such as:
- Underground drainage and sewer systems
- Cable protection conduits
- Municipal infrastructure
- Utility and civil engineering pipe manufacturing
Its focus on PP, HDPE, and PVC corrugated pipe machinery places it within the broader plastics-processing chain that supplies public works, building services, and utility networks. The company’s larger-diameter equipment range suggests relevance for infrastructure projects that require high-throughput pipe extrusion and robust mechanical performance.
Global Presence and Market Position
Dalian Sunlight is headquartered in Dalian, a coastal industrial city with access to highway, rail, port, and airport infrastructure, which the company identifies as an operational advantage for manufacturing and export logistics. It lists international sales contacts and has appeared in exhibitor directories for trade fairs such as Plastpol and VietnamPlas, indicating export-oriented commercial activity.
The company is also listed in plastics-industry marketplace and exhibition databases, which position it as a recognized supplier in the corrugated pipe machinery niche. Patent aggregation data attributes 136 patents to the company, suggesting a substantial technology-development effort, although the specific patent scope should be interpreted cautiously because database counts may vary by source and update timing.
Sustainability and Environmental Initiatives
Publicly available source material does not provide a detailed sustainability report, emissions inventory, or formal climate target for the company. However, the company’s technical messaging emphasizes lower power consumption in some production lines, which indicates attention to energy efficiency in machinery design.
In the plastics machinery sector, such efficiency improvements are commercially relevant because they can reduce operating costs for pipe producers and lower the energy intensity of extrusion. No verified public source in the provided material describes circular-economy programs, recycled-content process integration, or formal environmental certifications for the company.
Leadership and Corporate Governance
Publicly accessible profiles identify Bing Duo Jin as a board-level executive associated with the company, and other business databases reference additional management connections. The company’s public status since 2011 indicates that it operates with a governance structure appropriate to a listed enterprise, although detailed board composition and current executive roles are not fully documented in the provided sources.
Innovations and Future Outlook
Dalian Sunlight’s development path suggests a company focused on specialized process engineering rather than broad plastics diversification. Its strengths appear to lie in:
- High-speed corrugator design
- Large-diameter pipe production capability
- In-house precision machining
- Customization of extrusion systems
- Expansion into five-axis machine tools and composite equipment
The company’s future prospects are likely tied to infrastructure investment, demand for utility piping, and continued modernization of plastics processing equipment. Its combination of plastics machinery and precision-machine-tool expertise may support further product customization and manufacturing integration, particularly for customers seeking higher automation and lower energy intensity in extrusion lines.
Summary
Dalian Sunlight Technology is a specialized Chinese plastics machinery manufacturer whose core identity is built on corrugated pipe extrusion technology. Founded in 1993 and listed in 2011, it has developed a technical profile centered on high-speed pipe production lines, large-diameter extrusion systems, and precision-engineering capabilities, while also branching into five-axis machining centers and related industrial equipment.
References
- •
CPS+ eMarketplace. (n.d.). DALIAN SUNLIGHT TECHNOLOGY CO., LTD.DALIAN SUNLIGHT TECHNOLOGY CO., LTD.. CPS+ eMarketplace. https://www.chinaplasonline.com/eMarketplace/ExhibitorInfo?CompId=1012398Link