China origin HR/CR Carbon steel Plate, GB45# = 1045 = C45 = S45C, or GB20# Top China Steel Mill origin HR/CR Carbon Steel Plate, ANGANG STEEL or BAOSTEEL, Grade GB45# = 1045 = S45C = C45, dimension: 1mm-10mm THK x 1250mm x Cut Length (2440mm, for example). HR/CR Carbon Steel Plate