... and Hard ProofsTrademark: jhpOrigin: Shenzhen, ChinaProduct DescriptionHardcover and paperback children book printing details information is as follow:Size: ... 20,000pcs4, Cover paper200gsm, 250gsm, 300gsm C1S paper (coated one side) , 128gsm, 157gsm, 200gsm, 250gsm, 300gsm gloss art ... printing licence. Hard proofsFor printing products, color is one of most important element. To provide high quality ...