内芯有聚酯、芳香酯、棉材料。标准幅宽为330毫米
Flat belt ring belt drum molded seamless, there are two kinds of polyurethane material with neoprene material.
The inner core polyester, aromatic esters, cotton material. The standard width of 330 mm
The inner core polyester, aromatic esters, cotton material. The standard width of 330 mm











