About Us Star Profit is a professional company dedicated in designing and manufacturing rubber machines. Our company has been working in rubber industry for more than 20 years with professional knowledge and sufficient experience. It makes the sales with combination of rubber products production technology and machinery technology. The company mainly produces various specifications of the mixer upstream devices, rubber mixing machines, open mills, rubber calenders, tire building machines, tire curing presses, inner tube machines, air spring production machines, rubber conveyor belt production lines, etc. We also can design & manufacture various non-standard products according to clients' requirements. Our company guarantees to provide you excellent pre-market sale and after-sale service, timely technology information consulting, accessories and consumable parts supply. We have provided superior rubber machines to more than 50 customers in different countries. We uniquely understand the demanding and exacting requirements of the industry, and provide the best solutions for different clients. Win-win cooperation is our target, your satisfaction is our final success. We sincerely welcome friends from all walks of life to come to visit and build business relationship to create bright achievement future. Air Spring Tightness Testing Machine supplier in China website:http://www.starprofitmachine.com/