Quality Control

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Zhongyang attaches great importance to quality management, since 2006, the full implementation of ISO9001: 2008 international quality management system, the use of advanced detection equipment, each of the factory products are carried out a full range of quality testing to ensure product quality. We will do in each production process after a test, the product will be done after the final inspection. Our range of product testing includes dimensional accuracy, metallographic, hardness, torque, tension, straightness, roughness and so on.      


Contact Us

Zhejiang zhongyang screw manufacturing co. LTD

ADD : Jintang Town,Zhoushan City, Zhejiang

TEL : +86-0580-8055067


FAX : +86-0580-8055069

MOBILE : 13906804231

MAIL : zy@zyscrew.com


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