... manufacture, installation and maintenance of marine loading arm, truck/train loading arm, emergency release coupler, twin seal guide way valve, ... customers advanced technology and qualified certificates: ISO 9001:2000, API. Our customers include SINOPEC, CNPC, CAOSC, ESSO, SHELL ... , LPG) 2) Truck and railcar loading arms. 3). QC/DC (quick connect / disconnect coupler). 4) ERS (emergency release system) ...