WCW is a Chinese source manufacturer of fiberglass sleeving, heat shrink tubing and braided sleeving — serving EV, automotive harness, motor, transformer and medical customers in 60+ countries with full UL documentation and IATF 16949 quality systems.
WCW has held UL / CUL safety certification since 2003. Acrylic fiberglass sleeving is certified to UL UZFT2 and CUL UZFT8 — a recognition fewer than a dozen companies worldwide hold. All certification documents are available on request for supplier audits and PPAP packages.
From silicone fiberglass sleeving to PET braided sleeving, heat shrink tubing and silicone rubber tubing — sizes from 0.3 mm to 100 mm internal diameter.
Grade SGS. Braided fiberglass with silicone resin coating. The workhorse for motor leads and transformer wiring.
Grade ARG. Solvent- and abrasion-resistant. Certified to UL UZFT2 / CUL UZFT8 — ideal for transformers and oil-contact uses.
Expandable monofilament sleeving for harness bundling — flexible, flame-retardant and abrasion-resistant.
PSR series, extruded from Japanese, US and German raw materials. Medical- and food-contact friendly.
TGS-1W-600C. For continuous high-heat zones: hot runners, smelting equipment, engine bays.
SRS / SRG constructions, inside-fiber or inside-rubber. High tear strength for EV motors and harsh environments.
Four production bases: Shenzhen HQ, Shenzhen Plant II, Ningbo and the new Wahchangwei Industrial Park ($500,000 investment, 50,000 m² modern manufacturing center). You audit the factory that actually makes your parts.
UL / CUL certificates, ISO and IATF 16949 systems, FDA/LFGB food-contact files, RoHS and REACH declarations, test reports (dielectric, flammability, aging) — ready for your supplier qualification and PPAP process.
Experienced in cross-referencing Western and Japanese sleeving brands for cost-down programs, with matched dimensions, temperature class and dielectric performance.
20+ years of application engineering. Send your working condition — ID, temperature, voltage, medium — and receive a matched recommendation with samples and datasheets.
Internal diameters from 0.3 mm to 100 mm, dielectric strength up to 50 kV, operating temperatures from −60 °C to +600 °C. Custom constructions (PET outer layer, added fiberglass) available.
Sleeving shipped to 60+ countries across Europe, the Americas and Southeast Asia. Exhibited at Hannover Messe (Germany) and other international trade shows.
Engineered for the industries where insulation failure is not an option.
Battery packs, drive motors, ECUs and HV harnesses — 155 °C+ continuous, high dielectric strength.
Engine bay, chassis and sensor harnesses for OEMs, Tier 1s and harness makers.
Lead insulation, winding overhang protection — including oil-cooled and compressor motors.
Lead and coil insulation, oil-immersed environments, inverter and power module assemblies.
Tell us internal diameter, temperature range, voltage requirement and medium — get a recommendation with samples and datasheets.
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