We are a leading company in manufacturing and selling fluid loading system, twin seal guide way valves, holding 80%-90% of China market. Twin seal guide way valve is a unique double block & bleed valve, having the good functions of twin seal, no abrasion, no leakage, repair online. Our valves are used mostly in petroleum oilfield and oil pipeline, even appointed by  Chinese Army and specialized for military pipeline supply because of its high seal and flexibility.