A screw refers to a screw (foreign name: Screw). It is a tool that utilizes the physical and mathematical principles of the circular rotation and frictional force of an object to gradually tighten ...
The function of the hollow gecko is the same as that of the screw. It is used when self-tapping screws and expansion screws are not suitable. For example, in the light steel frame partition wall ha...
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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