Betopper is a professional manufacturer of air pushing bags, air cushions,oil storage bags,biogas pool and other special equipments for mining and construction projects,especially for granite and marble uarries.We have rich experience in manufacturing air pushing bag,which adopted high-quality raw materials,advanced technology and passed through strictly inspectiong.Our products are enjoying high reputation in market with high quality and competitive prices,whatever domestic or overseas,occupying 90% domestic market,and exporting massively to more than 40 contries,such as North America,South America,EU,India,Middle East,etc.