2. Welding: also known as fusion welding, fusion welding is a manufacturing process and technology to connect other thermoplastic materials such as metals or plastics by heating, high temperature or high pressure.
3. Stainless steel is the abbreviation of stainless acid-resistant steel, and steel that is resistant to weak corrosive media such as air, steam and water or stainless steel is called stainless steel; Steel resistant to chemical corrosive media (acid, alkali, salt and other chemical corrosion) is called acid-resistant steel. Their corrosion resistance is different due to their different chemical compositions. Ordinary stainless steel is generally not resistant to chemical medium corrosion, and acid-resistant steel is generally stainless.