ZZ TOP was audited by SGS in March, and all the quality system and service system are conformed with SGS requirement. ZZ TOP got the new cerfication from SGS for the products Drill stem testing including RTTS packer, Circulating valve, Hydraulic Jar, Tester valve, Super safety valve and wellhead equipment including DSA, spacer spool,Riser spool, Drilling spool, Flange adapter etc. Also ZZ TOP is certified supplier for the mud pump parts and other oilfield equipments & parts.