Our company had been Certificated by CCS classification for hatch cover/watertight door、gate ultrasonic test, and record on Directory of websites. We had 10 special surveyor who located at coastal port covered in China. We had been fitted several ultrasonic test equipment with type SAFE-CARGO and ULTREAD. We had been well completed entry -club cargo hold hatch cover seal test, Right-ship club cargo hold hatch cover seal test, delivery vessel cargo holds hatch cover seal test, hospital ship and other special ship watertight gate /door and pipe hatch cover seal test.