Water-Seal valve was found in 2003.Since then we have been growing up. Now we have coverd 35,000m2, 360 staffs joined in us including 37 middle and high ranking technicians. 129 sets of large and middle manufacturing equipments and 18 sets of performance testing equipments were brounght in from aborad. To be reliable, we own original design, exquistite technique, perfect manufacture and complete testing ways.