Introduction
SHENZHEN SQUARE SILICONE CO., LTD. is a Shenzhen-based silicone polymer materials manufacturer focused on liquid silicone rubber (LSR), solid silicone rubber, and related silicone compounds for industrial and consumer applications. Founded in 2002, the company describes itself as a specialized provider of LSR system solutions and a Chinese enterprise with early large-scale self-developed production of injection-molding liquid silicone rubber.
The company is headquartered in Longgang District, Shenzhen, Guangdong, and its business is centered on the research, manufacture, and sale of silicone rubber products used in electric power, medical, electronics, automotive, baby care, kitchenware, sports, textiles, and mechanical engineering markets. Company and exhibition listings also identify it as a plastics and rubber supplier with a technical focus on LSR, including products for insulation and other performance-demanding applications.
Square Silicone’s industry significance rests on its role as an early Chinese producer of large-scale LSR materials, its emphasis on proprietary process know-how, and its combination of materials development, formulation capability, and application support. Publicly available profiles report that it has built engineering and research infrastructure, accumulated invention patents, and expanded from its original Shenzhen base into a broader production footprint through a Zhejiang subsidiary established in 2016.
History and Development
- 2002: Shenzhen Square Silicone was founded in Shenzhen as a producer of polymeric silicone materials.
- 2003–2014: Company materials report a sequence of management and certification milestones, including ISO 9000 quality certification, recognition as a Shenzhen high-tech enterprise, ISO 14001, and OHSAS 18001 occupational health and safety certification.
- 2016: The company established a wholly owned subsidiary in Quzhou, Zhejiang, as part of its production-scale expansion.
The company also presents its core LSR technology as a proprietary achievement, stating that its injection-molding liquid silicone rubber received a national invention patent and industry recognition for technological progress. Chinese industry and exhibition profiles additionally describe Square Silicone as one of the early domestic firms to achieve large-scale LSR production through independent intellectual property.
Business Operations and Segments
Square Silicone’s principal business is the research, manufacturing, and sale of silicone rubber products, with a strong emphasis on LSR and related silicone materials. Its product and application portfolio is oriented toward industrial customers that require thermal stability, electrical insulation, processing consistency, and elastomeric performance.
The company is described in public listings as both a manufacturer and an export-oriented supplier. Its operations combine material formulation, process development, and customer application support, positioning it not only as a compounder but also as a technical solution provider for downstream users.
Products and Technologies
Square Silicone’s product line centers on liquid silicone rubber*, **solid silicone rubber, and related silicone elastomer materials. Public listings also mention **silicone gel, **food-grade silicone rubber, and silicone rubber **for electrical power and **medical* applications.
Key technical characteristics and capabilities associated with the company include:
- Injection-molding LSR for high-volume production.
- Platinum-curable two-component systems used in precision molding applications.
- Silicone materials designed for electrical insulation and dielectric performance in power-sector uses.
- Formulations for medical, baby-care, and food-contact applications, where cleanliness and material consistency are important.
- Application-specific grades for automotive, electronics, and mechanical engineering uses.
Company profiles report that Square Silicone has developed a broad internal product family, including more than 600 LSR products across multiple application series, and that it has served customers in numerous overseas markets. These claims suggest a business model built around both standardized grades and customized formulations for different end uses.
Applications and End Markets
Square Silicone’s silicone materials are reported to serve a wide range of end markets, including:
- Electric power and insulation systems
- Medical devices and healthcare-related products
- Electronics and electrical components
- Automotive parts and systems
- Baby products and consumer goods
- Kitchenware and food-related items
- Textiles and industrial goods
- Sports and health products
Exhibition and industry listings also associate the company with high-speed rail and aerospace-related uses, reflecting the broader performance range of silicone elastomers in transportation and advanced engineering contexts.
Global Presence and Market Position
Square Silicone maintains a commercial footprint beyond mainland China, with company profiles reporting exports to countries and regions across Europe, North America, Southeast Asia, and other international markets. Public materials also indicate sales into approximately 40 countries and regions.
Within China’s silicone materials sector, the company is repeatedly described as an early domestic producer of large-scale LSR, and several listings characterize it as a technical solution provider rather than a commodity-only supplier. Its market position appears strongest in application-specific silicone elastomers, particularly where customers seek tailored formulations for power, medical, and electronic uses.
Research and Development
Square Silicone places clear emphasis on R&D, supported by engineering laboratories and collaboration with research institutions. Public profiles state that the company has obtained more than 20 national invention patents and has been entrusted by or associated with Guangdong and Shenzhen engineering centers for liquid silicone rubber and silicone-composite materials.
The company’s development model appears to rely on continuous formulation work, application testing, and process optimization for injection molding and other silicone-processing routes. This technical orientation is consistent with the demands of the LSR market, where product performance often depends on curing behavior, processing stability, dielectric properties, and regulatory suitability for specialized applications.
Sustainability and Environmental Initiatives
Company materials report certifications in environmental management and occupational health and safety, including ISO 14001 and OHSAS 18001. These certifications indicate formalized management systems for environmental and workplace controls in manufacturing operations.
As a silicone materials producer, the company operates in a sector where sustainability discussions often involve energy use, process emissions, and material safety in downstream applications. Publicly available records also show environmental supervision activity at its Shenzhen facility, with inspection notes reporting operating waste-gas treatment equipment during production.
Financial Performance and Economic Impact
Public sources identify the company as a non-listed joint-stock company with registered capital reported at RMB 35 million in one company dossier and USD 4.5 million in a corporate profile. Employee counts reported in public listings vary, with figures around 189 to 200 employees appearing in current company materials.
Economically, Square Silicone contributes to China’s silicone materials supply chain by producing domestically formulated LSR and related elastomers for sectors that require performance materials rather than general-purpose plastics. Its export activity and expansion into broader production capacity underscore its role in the cross-border trade of specialty silicone compounds.
Quality Management and Certifications
Public company materials report several formal management and recognition milestones:
- ISO 9000 quality system certification in 2003
- Recognition as a Shenzhen high-tech enterprise in 2004
- ISO 14001 environmental certification in 2011 or 2012, depending on the source listing
- OHSAS 18001 occupational health and safety certification in 2014
The company also describes its core LSR product technology as having received a national invention patent and a technology-progress award. These credentials support its positioning in regulated or performance-critical markets such as power, medical, and electronics.
Innovations and Future Outlook
Square Silicone’s development trajectory points to continued emphasis on LSR formulation depth, application-specific customization, and expansion of technical support capabilities. Its early entry into large-scale LSR production, combined with patents and research-center affiliations, suggests a strategy built around proprietary know-how rather than basic silicone commodity production.
Future competitive dynamics in the silicone materials market are likely to remain shaped by demand from medical devices, electrification, electronics miniaturization, and higher-performance industrial elastomers. Within that environment, Square Silicone’s technical positioning in injection-molding LSR and specialty silicone compounds remains central to its market identity.
References
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CPS+ eMarketplace. (n.d.). SHENZHEN SQUARE SILICONE CO.,LTD.SHENZHEN SQUARE SILICONE CO.,LTD.. CPS+ eMarketplace. https://www.chinaplasonline.com/eMarketplace/ExhibitorInfo?CompId=1033057Link