1) Housing Materials: steel, aluminum alloy, zinc alloy. wheel material: PP, steel
輪殼材質(zhì):鋼,鋁合金,鋅合金。輪子材料:PP,或鋼
(2) surface: anodizing, zinc plated
表面:氧化,鍍鋅
(3) it is used in sliding in door and window frame
用于門窗滑軌
(4). with long life proformance
(5) any form of roller can be supplied by us. offer OEM service,
可以提供OEM服務