When inquiring and placing an order, please provide the following detailed information: product name (such as hot-dip galvanized color coated plate), technical standard (such as Q/BQB 440-2014), brand (such as TDC51D+Z), coating weight (if there are special requirements, it should be stated), coating structure (both the upper and lower surfaces should be coated with two layers, which is 2/2; the upper surface should be coated with two layers, and the lower surface should be coated with one layer, which is 2/1), specification (thickness ×  Wide ×  Allowable deviation in length): Type and color of the front surface paint (if special colors are required, a sample should be attached and negotiated): Front and back surfaces (usually the top paint is rolled on the outside): Roll weight (3-5 tons): Roll inner diameter (610mm or 508mm): Quantity (tons): Purpose: Packaging method (vertical or horizontal): Delivery date