[ Project Narrative]

Yao I becomes an internationally renowned manufacturer and a leader in the industry, not only because of innovative research and development of new products, but also because of quality control and guarantee.

For better manufacturing quality, Yao I independently developed equipment to achieve a leading position, continuously improving process and equipment to meet customers' needs, streamlining process for excellence. All products pass stretch test to achieve the demand of quality and quantity.

In addition to wear test and racket tension test, various types of string products are adapted to local conditions, including cold temperature, high temperature, tension, pressure, noise test. There is also customer complaint channel to ensure high-quality and lower defect rate.

Stretch Test