○ Passed China CCS ship classification society factory certification in 1998.
○ Passed ISO9001:2000 quality system certification and British LR classification society factory certification in 1999.
○ Obtained Sinopec material supplier qualification in 2000.
○ In 2001, we passed the factory certification of DNV in Norway.
○ Obtained CNPC material supplier qualification in 2002.
○ In 2003, we passed the American ABS classification society factory certification.
○ In 2004, we passed the factory certification of Japan NK Classification Society.
○ In 2005, we passed the certification of BV, API 5L and API 5CT.
○ In 2006, we passed CQC ISO9001:2000 quality management system certification and CNOOC material supplier qualification.
○ In 2007, we passed the factory certification of German GL classification society, EU PED certification, and CQC ISO14001:2004 environmental management system certification.
○ Obtained API 5D certificate, API Q1 certificate, API ISO/TS29001 certificate, API ISO9001:2000 certificate in 2008.
○ In 2009, we passed the review of CQC ISO9001 quality management system and the review of API 5L and API 5CT.
○ Obtained API 5DP certificate and passed HSE certification in 2010.
○ Passed CNAS certification and PED re-examination certification in 2011.
○ Passed GB/T28001 Occupational Health and Safety Management System Certification in 2013.
○ Passed Korean and Italian Classification Society factory certification in 2015-2016.