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Honors
Class A Qualification Certificate (Copy)
China National Accreditation Service for Conformity Assessment Accreditation Decision Letter
China National Accreditation Service for Conformity Assessment Laboratory Accreditation Certificate
National Torch Program Project Certificate
Trademark Registration Certificate
Certificate of Qualification for Well Control Equipment Manufacturing Enterprises (Original)
Patent certificate for a ball with a valve stem
Patent Certificate for Internal Blowout Prevention Tool Pressure Detection Equipment
A patent certificate for an ultra-wear-resistant stabilizer
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E-mail：mdjxbf2010@mdjxbf.com
Tel：+0086-453-6333133-8039
Fax：+86-0453-6333505
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