a4 white cardboard thickened cardboard handmade diy white cardboard 4k colored pencil painting sketch paper 8k white cardboard

a4 [80g] thin printing paper(A4【80克】薄款打印纸) a4 [120g] medium thickness(A4【120克】中厚) a4 [180g] thick cardboard(A4【180克】加厚卡纸) a4 [230g] cardboard thick(A4【230克】厚硬卡纸) a3 [80g] thin copy paper(A3【80克】薄款复印纸) a3 [120g] medium thickness(A3【120克】中厚) a3 [180g] thick cardboard(A3【180克】加厚卡纸) a3 [230g thick cardboard(A3【230克厚硬卡纸) 4k [200g thickened card paper(4k【200克加厚手工纸) 8k [200g thickened card paper(8k【200克加厚手工纸) 16k [200g] thickened(16k【200克】加厚)

20 sheets(20张) 50 sheets(50张) 100 sheets(100张)