Five China cable accessories makers to watch in 2026

China’s cable accessories sector is expanding alongside grid modernization, with five manufacturers standing out for different roles in the power connectivity supply chain. The group includes Ningbo Tonyhoo, CHANG LAN, CYG Electric Power Technology, Jiangsu Amcore and Shenzhen Woer Heat-Shrinkable Material, each serving distinct voltage and application needs.

Why it matters: - Cable accessories are essential for connecting, insulating, sealing and protecting power cables in transmission and distribution networks. - Buyers need suppliers with the right voltage ratings, installation methods and test documentation, not just broad product catalogs. - Asia-Pacific remains the largest and fastest-growing cable accessories market, supported by grid upgrades and power infrastructure investment.

What happened: - A 2026 industry review highlighted five China-based suppliers: Ningbo Tonyhoo Electrical Technology, CHANG LAN TECHNOLOGY GROUP, CYG Electric Power Technology, Jiangsu Amcore Electric, and Shenzhen Woer Heat-Shrinkable Material. - The companies span different parts of the cable accessory value chain, from complete connection kits to shrinkable materials and protection components. - Global Market Insights valued the global cable accessories market at USD 35.84 billion in 2025 and projected USD 37.88 billion in 2026. - The same research said the heat shrink cable accessories segment was worth USD 2,113.7 million in 2024, while the cold shrink tubing market reached USD 2.38 billion.

The details: - Tonyhoo was founded in 1997 in Yinzhou District, Ningbo, Zhejiang Province, and manufactures cable accessories and power environmental protection materials. - Tonyhoo says it has 12 trademark certificates, more than 60 patents, a 9,900 m² facility, about 100 employees, 20 R&D engineers and annual capacity of about 200,000 units. - Tonyhoo says exports account for about 50% of output, with overseas markets including the United States, Thailand, Albania, Vietnam, Tunisia, Russia and Saudi Arabia. - Tonyhoo says its products have been tested by the State Grid High Voltage Testing Center, SGS or the Shanghai Cable Research Institute. - Tonyhoo’s catalog includes cold shrink intermediate joints for 10 kV and 35 kV systems, cold shrink terminations, heat shrink terminations, separable connectors, cable lugs, oil-immersed transformers, polyurethane sealants, explosion-proof blankets, alloy protection housings and grounding boxes. - Tonyhoo’s DS/SC separable connector series is listed for 10 kV applications with a rated current of 630 A, one-minute AC withstand voltage of 42 kV, lightning impulse withstand voltage of 95 kV and partial discharge of no more than 10 pC. - Tonyhoo’s DT/SC cable lug series uses tin-plated copper and covers 10–400 mm² conductor cross-sections with a -40°C to 125°C operating range. - Tonyhoo’s protection housings cover 10 kV, 35 kV and 110 kV applications, with published flexural strength of 127 MPa and a three-day salt-water test in 3% sodium chloride solution. - CHANG LAN TECHNOLOGY GROUP is described as a China-based company associated with cable connection and insulation products in the power transmission equipment sector. - CYG Electric Power Technology describes cable accessories from 1 kV to 500 kV, including cold-shrink and prefabricated terminations and intermediate joints, plus cable monitoring solutions. - Jiangsu Amcore Electric is included as a Jiangsu-based company associated with electrical equipment and cable accessories. - Shenzhen Woer Heat-Shrinkable Material focuses on cross-linked materials and heat-shrinkable products used in electrical insulation and mechanical protection. - WOER’s product range includes heat-shrinkable tubing, heat-shrinkable power cable accessories, cold-shrinkable cable accessories, terminations, joints, pre-moulded accessories and separable connectors. - IEEE 1816-2024 covers preparation practices for shielded cables rated from 2.5 kV through 46 kV for mating accessories. - HS heading 8544 covers insulated wire and cable and other insulated electric conductors, but does not separately identify all cable accessory products.

Between the lines: - The five companies are not interchangeable because they sit at different points in the supply chain and serve different project needs. - Cold shrink products can fit sites where open-flame installation is restricted, while heat shrink products remain practical when installation procedures and equipment support them. - Material choice matters as much as product type, with cold shrink, heat shrink, separable connectors and protection housings each relying on different design and environmental properties. - Tonyhoo’s public profile says the company relies on customer needs and market feedback to convert R&D results into economic value. - Tonyhoo also says it directs about 6% of annual R&D funds to research and improvement and added new material projects and labs in 2020.

What's next: - Buyers will keep screening suppliers by rated voltage, cable construction, conductor cross-section, installation environment and destination-market compliance requirements. - Project teams should request type-test reports, routine-test records, conformity documents and installation instructions before supplier qualification. - Product-level verification will likely matter more than brand size for projects needing medium-voltage joint kits, shrinkable materials or mechanical protection housings.

The bottom line: - In China’s cable accessories market, the best supplier is the one whose documented model, voltage class and installation profile match the project exactly.