In.ver.sol ITALIA SpA

Donit Tesnit is your reliable partner and perfect choice for sealing solutions with customer-driven approach. The product range includes different types of material enabling you to find your optimum innovative sealing solutions.

Hangzhou Hengquan Technology Development Co., Ltd. is a science and trade company specializing in the sales of various chemical raw materials such as pharmaceutical raw materials, food additives, textile printing and dyeing auxiliaries, coating auxil