1999: installation of well chassis guide base plate in Panyu oilfield -- the first mixed gas diving operation, with a working water depth of 96 meters
2000: platform inspection of Pinghu oil and gas field in the East China Sea (air diving + ROV) -- undertaking the integrity inspection of offshore facilities for the first time
2001: underwater optical cable laying plough fishing - the first operation in the mode of dynamic positioning (DP) ship, with a water depth of 65m
2001: underwater structure cleaning and special inspection of "exploration No. 3" -- high pressure water jet technology was adopted for the first time
2008: replacement of new oil hose of FPSO "Nanhai Shengli" in Liuhua Oilfield
2009 / 2011 / 2014 / 2015 / 2016: Qinhuangdao 32-6 oilfield / Bozhong 25-1 oilfield submarine pipeline inspection and suspended section sand throwing treatment
2010: demolition of old single point and underwater installation of new single point in Xijiang oilfield - DP mode diving
2011: underwater replacement of mooring anchor line of FPSO "offshore oil 115" STP in Xijiang Oilfield
2012: underwater installation of fsou "South China Sea blooming" single point mooring upgrading and relocation project of Lufeng oilfield - DP mode diving
2012: marine biological cleaning and special inspection of Lufeng 13-2whp platform - mixed gas diving, with a water depth of 103m
2014: online replacement and underwater installation of mooring anchor cable of FPSO "offshore oil 111" in Panyu oilfield - FPSO does not stop production
2014: mooring anchor line replacement and underwater installation of FPSO "South China Sea Endeavour" in Wenchang 13-1 / 13-2 Oilfield
2015: air diving service of Myanmar zawtika project - Overseas IMCA standard construction
2016: Yacheng oil and gas field subsea pipeline pressure tapping -- the first case of using domestic tapping machine for muddy water operation
