1.copy paper 2.different size. 3.Weight: 70g, 75g, 80g 4.Whiteness:96%-100%, 100%-104%, 104%-106% 1.product name:copy paper2.different size.3.Weight: 70g, 75g, 80g4.Whiteness:96%-100%, 100%-104%, 104%-106%5.This product is used in offfice. A4 copy paper