Shipbuilding - remote shut - off devices for fuel oil tank and lubricating oil tank emergency shut - off valves 造船.燃油箱和润滑油箱用应急截流阀的遥控截流装置
4.
Shipbuilding - pneumatically operated remote shut - off devices for fuel oil tank and lubricating oil tank emergency shut - off valves 造船.燃油箱和润滑油箱用应急截流阀的气动摇控截流装置