中文
EN-
2017 Pressure Pipeline Permit
2017 Pressure Pipeline Permit -
CE certificate
CE certificate -
DVGW certification 1
DVGW certification 1 -
DVGW certification 2
DVGW certification 2 -
ISO9001 Quality system certification
ISO9001 Quality system certification -
ISO14001 Environmental System Certification
ISO14001 Environmental System Certification -
OHSAS18001 Occupational health system certification
OHSAS18001 Occupational health system certification -
Approved document for Pipe fitting sanitation 1
Approved document for Pipe fitting sanitation 1 -
Approved document for Pipe fitting sanitation 2
Approved document for Pipe fitting sanitation 2 -
Approved document for Pipe fitting sanitation 1
Approved document for Pipe fitting sanitation 1 -
Approved document for Pipe fitting sanitation 2
Approved document for Pipe fitting sanitation 2 -
Enterprise credit rating AAA certificate
Enterprise credit rating AAA certificate -
New business license 2019 (three certificates integrated in one)
New business license 2019 (three certificates integrated in one)
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Sanqing Industry and Trade
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East Side of Juguantun, Xinhua District,
Cangzhou City
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