免费下载黄片_久综合_国产一区二区高清无码_丝袜高跟鞋ol中文字幕_国产AV麻豆久久久久久久

冠航SKF-A型3t鋁合金手拉葫蘆

機體外殼采用鋁合金材質，防磁，有效減輕自身重量。

全封閉結構防腐蝕、防塵、防水。

對稱排列式同步齒輪，高精度，高韌性。

機械負荷式制動裝置，雙重棘爪彈簧，耐用性，安全性倍增。

限位擋板重物下降時作為停止極限以阻止過低發生的事故。

The body is made of aluminium alloys,antimagnetic,reduce itseld weight.

Total-enclosed cover,anti-corrosion,dust-proof and water-proof.

Symmetric,synchronous gear is high precision and tenacity.

Two spring pawls as the braking system,Make durability and safety doubly.

Position limited plate device can prevent goods to low.