オープン-エンドレンチの製造方法

1.この実用新案は、機械設備の技術分野、特にオープン-エンドレンチに関連しています。

背景テクニック：

2. There are many types and structures of existing wrenches, which provide great convenience for people's lives. At present, most wrenches used by people have a single structure, and the angle of use of the wrench cannot be changed, which makes it very inconvenient to use; , Combination wrenches have gradually entered people's field of vision, but the existing combination wrenches are mostly exposed to the air, which easily adheres to impurities and affects the use of the wrench.

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