A screw is a tool that uses the physical and mathematical principles of the circular rotation and friction of an object to fasten the mechanism of the object step by step. A screw is a common term for fasteners, an everyday colloquial language. Screws are indispensable industrial necessities in daily life: such as tiny screws used in cameras, glasses, clocks, electronics, etc., while ordinary screws are used in televisions, electrical products, musical instruments, and furniture.

Screws are classified into three types according to material: ceramic screws, metal screws, plastic screws, etc.

Ceramic screws: Ceramic screws have excellent characteristics such as high temperature resistance, insulation, non-magnetic, corrosion resistance, environmental protection and beauty, and never rust. They are not only comparable to traditional plastic screws and metal screws, but are constantly replaced and replaced in some fields. screws in the traditional sense.

Metal screws: The advantages of metal screws are that they have strong tensile strength and fracture toughness, poor ability to withstand high temperature, no insulation, and some metal screws have certain corrosion resistance.

Plastic screws: The advantages of plastic screws are insulation, anti-magnetic, and special plastic screws are corrosion-resistant. It is easy to wear and is not suitable for environments that require strong connections.