The actual delivery time is shorter than delivery time of contract; Normally the payment must be before shipment, but considering with detailed customer's situation, we can extend the payment time.

Zhengzuan is the leading company in Chinese super-hard tools industry, and we formulated Chinese super-hard tools industry standard. We have many signature products for PCBN tools, PCD tools, single crystal diamond tools, honing tools, carbide tools, aerospace tools, holders, presetters, and other auxiliary tools. For milling, reaming, boring, drilling and turning, we also made a variety of excellent products,which can improve machining quality and efficiency and meet cusotmer's requirement of high precision tools.

相对于国外进口刀具，郑钻刀具的制作周期更短，更具性价比，售后响应（技术支持）更迅速等。

There are recommended design and tools on our product catalogues, and it's possible to download it from our website.