91国产精品,夜夜嗨性色,作爱手机天天免费看,黄色成人美女艹

特點 Features

• 采用工程塑料材質(zhì)使產(chǎn)品更加輕便，運行起來更加順暢
• 采用全封閉形式可防止異物進入，可以更好的保護電纜和管線
• 蓋板可開合的設(shè)計方式使電纜及管線的安裝和維護操作起來更加簡易

• Proper for more than twice length of free span.
• Made of engineering plastic for the light weight.
• Openable covers procide convenient installation and maintenace.
• Skates enable longer operation life and worn skates can be replaced covently.
• Exactly measured guide channels should be installed for a long term performance and excellent movements.

需要更多詳細參數(shù)請下載產(chǎn)品手冊