... brief introduction of our products: we produce and supply concrete pump parts(fitting to Schwing and PM , Sany, ... rubber sponge balls:for all kinds of concrete pump pipefittings 7.wear plate and cutting ring Fitting ... ,Zoomlion,etc8.Other parts to the pump truck We can also supply the s-pipe,gate valve,delivery ... RAM,back-up ring,etc.9. Concrete spreader We can supply the 12m, 15m, 18m, 20m, 21m, 24m, ...