The company is specialized in manufacturing DHT bit, DHT hammer, air-leg rock drill, product quality has reached advanced level in the industry.



Quality Principles:

1.ZHONGRUI keeps carrying out the ISO9001 International Quality System strictly from production to storage to delivery.

2.ZHONGRUI' product standard always conforms to the latest international standard of each product line;

3.ZHONGRUI always follows one principle that "honesty and integrity comes first, customer gets top priority", and keeps honoring each product warranty strictly with real action.


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Add:No.3701, Zhuangjian Road, Kuiwen Economic Development District, Weifang City, Shandong Province, China