SERVICE CENTER
SERVICE CENTER
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PRE-SALE SERVICE
TEL:0086-453-6293088
EMAIL:info@sj-drilling.com
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AFTER-SALE SERVICE
TEL:0086-453-6293557
EMAIL:feedback@sj-drilling.com

QUESTIONS

HEILONGJIANG NORTH SHUANGJIA DRILLING TOOLS CO., LTD.
PRODUCT STANDARD

API SPEC 7-1、API SPEC5CT、API SPEC DP

QUALITY MANAGEMENT SYSTEM

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