What is the difference between Chinese-made screws and US screws?
China-made screws and the United States is no essential difference between the screws, and now the world are using the screws in China.
China and the United States have their own industrial standards. If the United States to get the screws to use China must use it to support the tools.
China-made screws are metric, American screws are American Standard or British
Formal manufacturers of screws from the size of the model is no difference (except small factories or workshops), the difference is mainly from the manufacture of screws and materials used in the surface of the treatment process only. Say even the Chinese exports of screws, in terms of manufacturing is also in accordance with foreign standards or contract requirements (such as the use of foreign customers specific raw materials or technology), the cost is relatively high, not the domestic market sales. Reference it.
