Zhejiang Ruikai Electric Co., Ltd. – Company Profile

Company Overview
Established in December 2000, Zhejiang Ruikai Electric Co., Ltd. is a specialized manufacturer of heat-shrink and cold-shrink cable accessories. With a registered capital of 10 million RMB, the company operates from its own modern facility, which spans a land area of over 14,300 square meters with a built-up area of 27,000 square meters.

Core Business
We focus on the R&D, production, and sales of power cable accessories, radiation modification of polymer materials, and cable connector boxes.

Key Details

• Founded: 2000

• Primary Industries Served: Power, Electronics, Petrochemical, Construction, and Communications.

• Compliance Standards: GB/T11017.3, GB/T12706.4, IEC60840, IEC60502-4.

• Key Product Features: Superior electrical & mechanical performance, lightweight, easy installation, aging resistance, and stability across high/low temperature environments.

• Production Scope: Full range of cable accessories for voltage levels up to 110kV.

• Corporate Values: Rigorous, Passionate, Innovative, Integrity, Gratitude, Win-Win.

Certifications & Quality Assurance
The company maintains ISO 9001:2015 (Quality Management), ISO 14001:2015 (Environmental Management), and ISO 45001:2018 (Occupational Health & Safety) certifications, along with National Safety Standardization. We implement a strict “6S” production management system, striving for zero defects to deliver consistently high-quality, reliable, and value-added products to our customers.

Manufacturing & Technical Capability
Our facility is equipped with comprehensive production and testing assets, including electron accelerators, injection molding machines, and rubber molding machines. An in-house high-voltage screening and testing center ensures all products meet rigorous inspection standards.

Our Technology & Products

Cold-Shrink Technology
Our cold-shrink products utilize pre-expanded, high-resilience silicone rubber with "elastic memory." Upon removal of the supporting core, the component contracts radially to form a permanent, mechanically tight seal around the cable. This technology, enhanced with specialty sealants, ensures complete environmental sealing—effectively preventing moisture ingress and failures caused by atmospheric conditions. The superior dielectric and recovery properties of the silicone rubber prevent electrical breakdown from cable “breathing.” These accessories require no special tools or heat sources, enabling quick, safe, and reliable installation. They are widely used in power, telecom, military, and heavy industries such as metallurgy, mining, and petrochemicals.

Heat-Shrink Technology
The production of our heat-shrink accessories involves compounding, molding, irradiation cross-linking, expansion, and assembly. They leverage the shape-memory effect of radiation-modified polymers. These accessories provide an integrated solution for waterproofing, stress control, shielding, and insulation in a single component. Designed for durability in harsh environments, they offer excellent electrical and mechanical properties, are lightweight, and easy to install. They find extensive application in power, petroleum, chemical, railway, port, and construction industries.

Product Portfolio
We specialize in manufacturing:

• Power cable accessories (heat-shrink & cold-shrink)

• Heat-shrink busbar tubing

• Custom-shaped heat-shrinkable products

• Silicone rubber insulated connectors and components

Additionally, we offer external irradiation processing services using our electron accelerator equipment. Our products have been tested and verified by the National Power Industry Electrical Equipment Quality Inspection and Testing Center and comply with relevant GB/T standards.