The company is specialized in manufacturing DHT bit, DHT hammer, air-leg rock drill, product quality has reached advanced level in the industry.
 
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ISO9001 annual examination
ZHONGRUI passed the annal examination of ISO9001:2008. Trough this certification, we enhance our administration level and reinforce our quality awareness.
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Add:No.3701, Zhuangjian Road, Kuiwen Economic Development District, Weifang City, Shandong Province, China