Hefei sanchongjie Electrical Equipment Co., Ltd.

Hefei Sanzhongjie Technology Co., LTD

Hefei Sanchongjie Technology, a high-tech enterprise integrating research and development, manufacturing, and sales, provides high-quality insulating battery auxiliary materials for power batteries, power supplies, energy storage systems (ESS), special power applications, electric vehicle/automotive charging infrastructure, motors, transformers, and more. The company is equipped with 49 cutting, forming, die-cutting, stamping, slitting, and adhesive coating machines, capable of achieving a minimum slit width of 2.8 mm and a maximum roll diameter of 800 mm.

Our product line covers the following eight major categories:

1. Insulating washers/spacers (insulating gaskets with adhesive backing: straw paper / Tyvek® / aramid / PET / PP / PC, etc.)

2. Buffer pads / shock-absorbing pads (EVA foam / silicone / rubber, etc.)

3. Nickel strips / nickel sheets (pure nickel strips / nickel-plated steel strips / battery-grade nickel sheets, etc.)

4. Epoxy boards / FR4 boards

5. Adhesive tapes (fiberglass tape / double-sided fiberglass mesh tape / fabric-based pipe tape / double-sided adhesive tape / polyimide tape (Kapton® tape) / PTFE tape (Teflon® tape) / cellulose acetate cloth tape, etc.)

6. Heat-shrink tubing (PVC / PE, etc.)

Hefei Sanchongjie Technology will continuously optimize production processes, enhance product quality, expand production capacity, and strive to deliver one-stop comprehensive solutions for insulating battery auxiliary material systems to our partners. We are moving forward toward our ambitious goal—becoming a leading manufacturer in the battery auxiliary material system industry.

Applicable Industries

New Energy Industry

Provide high‑voltage insulation, isolation protection, flame‑retardant thermal insulation and anti‑short‑circuit cushioning for lithium‑ion battery cells, battery modules, battery packs and energy storage cabinets. With materials such as fish paper, aramid paper, flame‑retardant Mylar sheets, epoxy boards, thermally conductive insulating sheets and heat‑shrinkable tubes, it effectively blocks the propagation of cell thermal runaway and increases the creepage distance of high‑voltage systems. It adapts to long‑term charge‑discharge cycles of new‑energy‑vehicle power batteries, residential / commercial & industrial energy storage and large‑scale energy‑storage power stations.

Applicable Industries

Automotive electronics

It covers high‑voltage systems and onboard low‑voltage electronic components for new energy vehicles. It achieves insulating thermal conduction and high‑voltage isolation in high‑voltage devices such as OBC on‑board chargers, PDU high‑voltage distribution units and MCU motor controllers. For precision electronic structures including vehicle central control, smart cockpit, radar, BMS battery management system and car lamps, it delivers functions of insulation isolation, gap filling, shock‑proof cushioning and wire harness protection. The materials feature vibration resistance, high‑low temperature resistance, flame retardancy and anti‑aging performance, adapting to complex vehicle operating conditions.

Applicable Industries

Home appliances

Widely applied in white‑goods, small home appliances and LED lighting products. It provides inter‑slot insulation, circuit board isolation, heating‑element insulation and harness terminal protection for compressor motors of air conditioners, refrigerators and washing machines, heat‑generating home appliances such as rice cookers, hair dryers and space heaters, as well as LED drive power supplies and lighting fixtures.

Applicable Industries

Industrial Control & Electrical Equipment Sector

Applied to industrial equipment such as switching power supplies, frequency converters, servo drives, PLC control cabinets, high‑low‑voltage distribution cabinets, transformers and reactors. Using products including insulating sheets, die‑cut insulating gaskets, thermally conductive insulating sheets and heat‑shrinkable tubes, it addresses challenges of insulation and heat dissipation for power devices, circuit board isolation, copper busbar terminal insulation and internal insulating support of equipment.

Applicable Industries

3C Consumer Electronics

3C Consumer Electronicsy:Suitable for precision and slim electronic products such as smartphones, laptops, tablets, smart wearables, power adapters and power banks. Made of ultra‑thin PET/PC Mylar sheets, insulating tapes and precision die‑cut insulating gaskets, they provide insulation isolation, reinforcement protection, short‑circuit prevention and electric‑leakage prevention for device mainboards, batteries, cameras, FPC flexible circuits and metal housings, meeting the stringent requirements for miniaturization, slim design, high precision and safety compliance of consumer electronics.