标准尺寸：△700mm,△900mm,△1100mm 方形标准尺寸：600*600mm,800*800mm,2400*1200mm,3000*2000mm,3500*2000mm, 4000*2000mm,4000*2200mm,4000*2400mm,5000*2500mm 圆形标准尺寸：Ф600mm,800mm,1000mm