Certificate of Authority to use the Official API Monogram
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License number:
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The American petroleum institute hereby grants to ***.
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The right to use the official API Monogram on manufactured products under the conditions in the official
publications of the American petroleum institute entitled API Spec Q1 and API spec 7K
and in accordance with the provisions of the license agreement.
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In all cases where the official API monogram is applied,The API monogram should be used in conjunction with this certificate number***
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The American petroleum institute reserves the right to revoke this authorization to use the official API monogram for any reason satisfactory to the board of directors of the American petroleum institute.
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The scope of this license includes the follwing products:Rotary bushings,Rotary slips,Slush pump components,Spiders not capable of use as elecators,Manual tongs,Safety clamps not used as hoisting devices,
power tongs including spinning wrenches.
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QMS exclusions:NO exclusion identified as applicable.
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Effective date:April 30,2013
Expiration date:December 11,2015
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To verify the authenticity of this license ,go to ****
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China united certification center 
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certificate of conformity of Environmental management system certification
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Certificate number.
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This is to certify that the system of ***
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This certificate is valid to the following prodcuts/service.
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Design,production,and correlative management activities of drilling equipments 
and handling tools for oilfields,production and correlative management activities of cast steel piece.
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