KINGDRILLING DIAMOND has a professional QC team with 15 years experience to provide DTH hammer bit with the best quality and high stability.
We will test the each product, from the raw material testing, machining processing quality testing, finished products quality testing before shipping, to make sure its high quality.
We will pack the cargo well with wooden cases, to make sure the goods in good status during delivery.
Certification
Standard:
HIGH-TECH
Number:
GR201642000407
Issue Date:
2016-12-13
Issued By:
HBSTD
Standard:
SGS
Number:
QIP-ASI189296
Issue Date:
2018-06-25
Expiry Date:
2024-06-25
Issued By:
SGS-CSTC
Standard:
LETTER OF PATENT
Number:
2381281
Issue Date:
2014-06-13
Issued By:
Intellectual Property Office of the People's Republic of China