Business

Business license
Open Bank Account Permit Certificate
Registration form for foreign trade operators
Registration certificate of customs declaration unit
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management

ISO9001 quality management system certificate
ISO14001 environmental management system certificate
ISO45001 occupational health management system certificate
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Trademarks & patents

Trademark registration certificate
Trademark copyright certificate
patent for invention cetificate
Utility model patent certificate of a pipe processing nozzle welding derusting device
Utility model patent certificate of a device convenient for painting steel pipe outer wall
Patent certificate for utility model of fixing device for oil pipeline
Utility model patent certificate of pipeline installation structure for long distance natural gas transmission
Patent certificate of utility model for oil transportation pipeline
Utility model patent certificate of a multi-purpose pipe flange sealing interface
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CE & credit

CE certificate
Enterprise credit rating certificate (3A)
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