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Why Can We Always Ensure Excellent Quality

Quality Control

We have our own testing room.hose testing machine,including ozne test machine,burst pressure test machine,high quality and low quality test machine,flex whip test machine, tensile test machine and so on,the pressure test machine to avoide any lekeage.

Certification

QINGDAO GUOSONG MACHINERY PARTS CO.LTD Certifications
Standard: TS16949
Number: IATF0068302
QINGDAO GUOSONG MACHINERY PARTS CO.LTD Certifications
Standard: 02405Q10747R0S
QINGDAO GUOSONG MACHINERY PARTS CO.LTD Certifications
Standard: DOT
QINGDAO GUOSONG MACHINERY PARTS CO.LTD Certifications
Standard: TS16949
Number: IATF0068302
QINGDAO GUOSONG MACHINERY PARTS CO.LTD Certifications
Standard: 02405Q10747R0S
QINGDAO GUOSONG MACHINERY PARTS CO.LTD Certifications
Standard: DOT
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