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Новости

Brief introduction of V ball valve

The pneumatic V-shaped ball valve developed by Zhejiang Haidun is a kind of high-grade control valve with right-angle rotation.

V-type ball valve sealing surface treatment

Surfacing STL Treatment of Sealing Surface of Pneumatic V-shaped Ball Valve

Thailand customer visit

On November 4, 2018, Zhejiang Haidun welcomed a group of Thai customers to communicate and negotiate. During this visit, the customer visited the production process of our company's V-type ball valve and knife-type gate valve......