품목평량(g/m2) 톤당 넓이(m/t)국판(940*636)46판(788*1091)톤당가격(원/t) RPD10012083332500000 RPD12014469442500000 RPD14016859522500000 RPD20024041672500000 RBD30022222500000 RBD40016672500000 SPN80 SPN100 SPN130 STN6001042