The excellent waterproof performance of SUNBOW double-wall heat-shrinkable tubing has amazed the German wiring harness manufacturers. After using SUNBOW's double-wall heat-shrinkable tubing, there is no water leakage or seepage. Can't help but sigh: SUNBOW manufactures are cows. SUNBOW's double-wall heat-shrinkable tube was successfully matched with a wire harness manufacturer in Germany. So far, it has supplied more than one million meters of double-wall heat-shrinkable tubing to the customer, becoming its A-level supplier.

  With the upgrading of the domestic industrial structure and the international industrial transfer, this has further stimulated the growth of my country's insulation industry. But this also means that many manufacturers will start opportunistic:

    1) The quality of the products produced varies from good to bad, and most of them are based on low-end products. The quality of the product cannot be guaranteed.

2) Lack of innovation and design, mainly through imitation to produce products. The service life of the product is never guaranteed, and the efficiency is low, and the use cost will be greatly increased.

3) The finished product is made of inferior hot-melt collagen material, which is indistinguishable from the naked eye, and the sealing and moisture-proof performance of the tube will be greatly reduced. If the wiring harness is used for a long time, not only problems such as water leakage may occur, but also serious pollution to the wiring harness, greatly damaging the customer's products, and causing serious quality accidents to the customer.

Anne, a purchaser from a German wiring harness manufacturer, found us at the beginning of last year, hoping that we could provide a heat-shrinkable tube that is insulated, anti-corrosion, flame-retardant and wear-resistant, and highly waterproof. I have looked for samples provided by many companies before, but the test results are not satisfactory. They are all "selling dog meat" and cannot meet these requirements at the same time. When I first found SUNBOW, he was half-believing.

According to customer requirements, we recommended double-wall heat shrinkable tubing to customers. The outer layer is made of radiation cross-linked environmentally friendly PE material, and the outer layer is made of high-quality hot melt adhesive. This product has the functions of waterproof, anti-corrosion, insulation, etc., and is widely used in industries such as electronics, electric power, and automobiles. At the same time, it also showed customers the UL certification, RoHS, REACH environmental protection test report, which proved that SUNBOW is not "talking on paper".

I sent a sample to the British customer. After 3 months, I got a reply that SUNBOW’s double-walled heat-shrinkable tube has the same color and excellent waterproof and sealing performance. After the heat-shrinkable tube is placed on the product, the waterproof test effect is very good. good. At the same time, SUNBOW's heat shrinkable tubing has a water absorption rate of less than 0.2% after 2 months of continuous testing. All requirements are perfectly met and immediately become the first choice of customers.

SUNBOW double-wall heat-shrinkable tubing can maintain excellent product performance and the price is impeccable. The customer immediately placed an order for 50,000 meters and started trial production. In the past two years of continuous supply, the quality and service of SUNBOW's products have been highly recognized by the customer, and the customer has been included as the only designated supplier of casing.