... :2008 4.100mm, 150mm PU sandwich panel and cold storage PU sandwich panel is using colour coating steel sheet as ... sides:Carbon steel sheet, color steel sheet, stainless steel sheet for customers' option 2) Thickness(mm): 0.4, 0.42 ... , 0.45, 0.5, 0.7, 1.0 3) Color: According to customer requirement 4) ... , 200mm.3.Fireproof:According to customer requirement. PU sandwich panel for cold storage