... system for tank truck,socket,probe) Optic sensor(overfill detection system,tank truck parts,f ... thousand square meters; therein built-up area reaches 150 thousand square meters. Main products are: concrete mixer ... sales per year is about 150,000,000USD, and our exporting rate is about 75%-85%.We ... ,swivels, Couplings and Valves etc. Optic sensor(overfill detection system for tank truck,socket,probe)