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Embedded parts (prefabricated parts) are the components that are pre-installed (buried) in concealed works. They are the structural parts that are placed when the structure is poured, and are used ...
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We will give masks and other protective equipment to friends from abroad for free. We will also pay for the express fee. I hope you can take good care of yourself and ensure your safe...
Hexagon socket screws are also called cylinder head screws, also called hexagon socket bolts. Hexagon socket screws are divided into iron hexagon socket screws and stainless steel hexagon socket sc...
The production process of the tooth bar is the simplest, wire drawing, blanking, chamfering, typing, heat treatment, thread rolling, surface treatment
If you have the strength, please refer to...
That is teeth, also known as screw. It is the name of the Han nationality furniture parts in the Ming and Qing Dynasties. The corresponding standard is not found in the national standard, correspon...