About us
About us

The automation level of overall production unmatched among Chinese manufacturers

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Who We Are

Shenzhen Sunbow Insulation Materials MFG. Co., Ltd.

was established in 2003, mainly engaged in research & development, manufacture and sales of various insulation sleeves. We have a leading R&D team, industry-leading production equipment and advanced testing equipment.

After more than 20 years of steady development, with the joint efforts of all employees, we now hold more than 60 patents, and successively gained the “Shenzhen High-tech Enterprise” in June 2015 and the honorary title of “National High-tech Enterprise” in December 2016, and successfully passed the second “National High-tech Enterprise” review in December 2022. In June 2022, it was awarded the title of “Boutique New” small and medium-sized enterprise in Shenzhen, and it was awarded the “Technology-based” enterprise in Guangming District in 2022.

  • Monthly Output
    40M+
    Monthly Output
  • Patents
    60+
    Patents
  • Established
    2003+
    Established
  • Factory Area
    20,000m²
    Factory Area
Sunbow
  • Shenzhen High-tech
    Enterprise

  • National High-tech
    Enterprise

  • National High-tech
    Enterprise

Products & Certifications

Our main products include fiberglass sleeving, all kinds of heat shrinkable tube, PVC tube, silicone rubber tube, PTFE tube, expandable sleeve, corrugated pipe, polyimide film tube and more. All of our fiberglass sleeving have obtained UL and CSA safety certificates (E333178--UZIQ2, VW-1 for flame retardant requirements; E333177--UZFT2/8, 200C, 600V for temperature resistance level requirements). Our heat shrinkable tube, PTFE tube, silicone rubber tube and PVC tube have obtained UL certificates (Cert. No. YDPU2/8: E360625). Our expandable sleeve also successfully obtained UL certificates in 2017 (Cert. No. UZIQ2: E333178).

So far, our company is currently one of the few professional manufacturers of fiberglass sleeves in mainland China that have both UL and CSA certifications, and we are also the only manufacturer that can provide UL certificates covering all colors and the maximum size range (24AWG / 0.55mm ~ 1 inch / 25.4mm). At the same time, all products conform to EU RoHS and REACH test reports.

  • IATF16949:2016

  • ISO9001:2015

  • UZFT2.E333177

  • UZFT8.E333177

  • UZIQ2.E333178

  • YDPU2.E360625

  • YDPU8.E360625

  • Invention Patent Electronic Certificate

  • Trademark Registration Certificate

01/09

Capacity & Quality

Due to business expansion, we not only retained the headquarters in Gongming, Shenzhen, but also opened a new plant in Qiaotou, Dongguan in December 2016. The two factories cover an area of nearly 20,000 square meters, with monthly output of various types of sleeves over 40 million meters. To meet standardized management needs, we successfully upgraded and passed ISO9001:2015 and IATF16949:2016 in July 2022. ISO14001 is currently being implemented.

Trusted Worldwide

Over the years, we have been enjoying a good reputation in our industry by adhering to the business philosophy of “Faith, Practical, and Responsive”. We also gain support and trust from many international well-known enterprises, such as Black & Decker, Emerson, Whirlpool & Conair in the USA; SEB in France; Philips in the Netherlands; Schneider and Siemens in Germany; Electrolux in Sweden; ABB in Switzerland; Zoppas in Italy; Breville in Australia; Toshiba, Panasonic, Mitsubishi Heavy Industries and Hitachi in Japan; Samsung in South Korea; and Huawei, Haier, Midea and CRRC in China.

As a second-level supplier of automotive systems, our products have been indexed in IMDS (International Material Data System), and we have become a qualified supplier of many world-renowned automobile brands, such as Benz, Volvo, Audi, Toyota, Land Rover, GM, Ford, Honda, Nissan, Suzuki, Hyundai, Volkswagen, BYD, Geely, Tesla, Chongqing Xiaokang and Liuzhou Wuling.

  • Working together, we'll drive better outcomes and achieve results.