SUNBOW glass fiber casing has stable performance and excellent pressure resistance. It has become the first choice of customers among many glass fiber casing manufacturers in the same industry. Since 2019, it has been cooperating so far, and there has been no complaint. SUNBOW has therefore become the only designated supplier of fiberglass tubes for this customer.

SUNBOW focuses on the whole of China, has insight into the development of the industry as early as 2003, and began to engage in research and development, production and sales of various insulating sleeves. So far, it has accumulated more than ten years of industry experience. SUNBOW has mastered advanced production technology, has an exclusive production formula, and the product quality is unmatched by its peers. SUNBOW quality is trustworthy.

At the beginning of 2019, after purchasing from a French sensor manufacturer, I found SUNBOW after a friend's introduction. The new project needs a fiberglass tube, and we hope we can provide samples. Because I was looking for other manufacturers to provide samples before, but because the withstand voltage was not very stable, the test conditions of the samples were very unsatisfactory, and new projects were repeatedly delayed. After listening to Ms. Li’s description, I judged that Ms. Li bought a low-quality fiberglass tube, and immediately analyzed the cause of voltage instability to Ms. Li:

1) The paint concentration is too low; the woven glass fiber tube needs to go through the coating process to reach the withstand voltage. The concentration of paint determines the voltage. In order to reduce costs and earn greater profits, some manufacturers choose to reduce the concentration of paint.

2) Air bubbles appear; the irregular operation during the over-painting causes air bubbles to appear on the tube body, resulting in uneven paint on the tube body and unstable voltage.

3) The quality of raw rubber; in order to save costs, low-end manufacturers often start with raw materials and purchase inferior raw materials for production.

4) The blank tube is poorly braided and too sparse and loose; some manufacturers will use obsolete and backward braiding machines to braid the blank tube. However, the backwardness of the machine made the tube weaving too loose.

    Then I recommended this glass fiber tube of our company SB-SGS-40 to Miss Li. Our silicone fiberglass bushings are produced with high-quality raw materials. At the same time, our 4KV fiberglass bushings will be oiled twice to ensure the stability of the voltage. Moreover, our company has more than ten years of production experience and has formed a mature production system.

One month after sending the sample to the customer for testing, the customer returned an email to me in surprise and said: SUNBOW really deserves its reputation, the product test is very smooth, and the withstand voltage is also very stable. Immediately placed an order for 100,000 meters, and promised that if there are other projects that need to use fiberglass pipes, SUNBOW will also be the first choice.

SUNBOW glass fiber tube and other insulating sleeves serve the top 10 customers in the industry. Try a small order to solve your intractable diseases.