雙鳥牌手拉葫蘆產品特點：
     1、全金屬外殼，即使在惡劣的條件也不會損壞內部零件；
     2、起重鏈輪經過加硬精加工處理，保證鏈條拉動時不會卡組；
     3、機體和零部件均采用高質量材料，經久耐用；
     4、上下吊鉤具有非常高的韌性，即使過度超載，也只會緩慢變形，不會斷裂。

Two birds player hoist features:
1, all metal shell, even in bad conditions will not damage the internal parts;
2, the lifting of the chain through the hard finishing, to ensure that the chain is not the card group;
3, the body and the parts are the use of high quality materials, durable;
4, on the hook has very high toughness, even excessive overload, it will only slow deformation, not broken.

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