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The professional contract certificate of petrochemical equipment ａｎｄ pipes
The certificate for manufacturing the pressure tanks
The import ａｎｄ export certificate of international trade
The licence of safety production
CCS certificate
Inspection certificate of boiler
ISO14001:2008
ISO9001:2008
OHSAS18001
The national electric CSA NERLIC of vapor recovery
The utility model patent of bulk system of AHTS
The utility model patent of Environment-friendly biological filter tank

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