cold rolled coil is hot rolled coil as raw material, after further rolling into steel plate which is the thickness less than 4mm, includes plate and coil.

Zinc-aluminum-magnesium coil coating composition is mainly composed of zinc, aluminum and magnesium, the main component is zinc, followed by 1%-6% aluminum and 1.5-3% magnesium and trace silicon composition (different manufacturers have slightly different proportions), compared with other coating products have excellent notch protection performance.

Galvanized steel sheet is to prevent the surface of the steel sheet from being corroded. A layer of zinc is plated on the surface of the steel sheet to prolong its service life. The surface of the zinc plated steel sheet is called galvanized steel sheet.

 Aluminum zinc steel sheet is an alloy coating consisting of 55% aluminum, 43.5% zinc and 1.5% silicon, which combines the physical protection and high durability of aluminum with the electrochemical protection characteristics of zinc, giving it higher corrosion resistance than galvanized steel under the same conditions.

polyester color coated sheet is painted polyester coating on the surface of the sheet, then baked at high temperature.

stainless steel refers to the stainless steel with rust and corrosion resistance as the main characteristics, and the chromium content is at least 10.5%, the carbon content is not more than 1.2% steel.

Aluminum sheet refers to the rectangular sheet made of aluminum ingot rolling, which is divided into pure aluminum sheet, alloy aluminum sheet, thin aluminum sheet, medium thick aluminum sheet and aluminum embossed sheet.

tinned steel plate is a cold rolled low carbon steel sheet or strip coated with commercial pure tin on both sides.