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esimtech σε πρόσθεσε στο Shopping
2023-09-07 02:02:44 -

Professional Custom Screw Manufacturer - KENENG
Screws refer to a tool that gradually tightens a part using the mathematical and physical principles of the beveled circular rotation and friction of an object. Screws are a common fastener that is widely used in daily life and production. The general material is plastic or metal, and the grooves engraved on the surface are called threads, which are cylindrical. Screws are ubiquitous in...

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