... , 3.Affordable and functional: 4.durable service 5.high quality WE are the professional technology-intensive industry,which is ... . Our products with advanced equipment,mature techniques and with high precision, low noise, long-life and excellent reliability. 1 ... Bearing rollerBearing Material carbon steel ( carbon,chrome,stainless steel,iron,ect. It can option )Roller Material nylon (POM,nylon ...