3339| 8
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碳鋼螺絲和不銹鋼螺絲,擰動(dòng)所用力為何不一樣? |
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點(diǎn)評
一般都是互相調(diào)貨,有時(shí)候也不確定就是那一家生產(chǎn)的
沒毛病,而且就算是同一家生產(chǎn)的螺絲也會(huì)有擰不進(jìn)去的失敗品
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