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ISO9001 certified factory from China specializing in high-performance heat shrink and cold shrink cable accessories. Trusted by global distributors and industrial clients for reliability, durability, and compliance with IEC 60502 and UL standards.
A trusted manufacturer of high-quality electrical insulation and protection solutions for power transmission, distribution, and industrial applications.
Changzhou Longchuang Insulating Material Co., Ltd. is a leading manufacturer of electrical cable accessories based in China. With years of expertise in polymer science and electrical insulation, we deliver reliable, high-performance products that meet international standards including IEC 60502, UL, and RoHS.
Our product range includes heat shrink end caps, cold shrink termination kits, busbar sleeves, identification tubes, and specialty protection sleeves for harsh environments. Designed for use in power generation, transmission lines, and industrial electrical systems.
We serve clients across Asia, Europe, the Middle East, and South America, offering OEM/ODM services, bulk pricing, and technical support for large-scale projects.
High-performance cable accessories engineered for durability, insulation, and environmental resistance.
IEC 60502 Standard, 35KV Indoor/Outdoor, UV Resistant
UL 224 VW-1, 10mm–160mm, Flame Retardant
1KV, 2:1 Shrink Ratio, Flame Retardant
Tin Plated, High Conductivity, Corrosion Resistant
Reusable, High Flexibility, Easy Installation
UL1441, -55°C to 200°C, Abrasion Protection
-65°C to +200°C, Acid & UV Resistant
2/3/4/5/6 Cores, Dielectric Strength 15KV/mm
Engineered for safety, durability, and compliance in demanding electrical environments.
Products tested up to 26kV/mm dielectric strength. Ideal for high-voltage applications in power transmission and industrial systems.
From -65°C to +200°C, our sleeves and connectors withstand thermal stress, ensuring long-term reliability.
PTFE and silicone-coated products resist oil, acid, UV radiation, and corrosion—perfect for outdoor and industrial use.
ISO9001, UL, RoHS, and IEC 60502 compliant. Rigorous quality control ensures every batch meets global standards.
Trusted by clients in Europe, Middle East, Asia, and South America. Fast shipping and documentation support.
We offer private labeling, custom sizes, colors, and packaging. Ideal for distributors and project suppliers.
Get answers to common inquiries about our products and services.
Yes. Our products meet IEC 60502, UL, RoHS, and ISO9001 standards. We provide test reports and certification documentation upon request.
Yes. We support OEM manufacturing, custom packaging, and private labeling for distributors and large-volume buyers.
MOQ varies by product. For most items, it starts at 1,000 pieces. Contact us for specific product quotes and volume discounts.
You can request samples directly through our official website. Sample availability and shipping terms apply.
We export globally, including Europe, the Middle East, Southeast Asia, South America, and Africa.
For quotes, samples, or technical support, visit our official website to connect with our team.
No fake forms. No placeholder emails. Connect securely through the official channel.
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