My company purchased high amount of variable valves and robber vibrating joints for the hospital project on 2011. The process was very satisfiable and the service they provide was satisfactory at the same time. The warranty was to provide the further satisfaction. However, with their high quality of their products we realised there were no need for such a thing and they take a full responsibility toward their products. Long story short, we decide to have them on our side as the main source of an industrial valves.