... ,400gsm)cover grey board:1.2mm,1.5mm,1.8mm,2.0mm,2.5mm.3.0mm grey boardDouble-side offset paper80gsm,100gsmkraft paper ... are an professional printing & packing factory ,we have about 10 years experience in notebook products ,calendars ,promotional leaflets and other ... printing products.Skilled Workers: 10-20 skilled workers in the postion of production ,QC,anc ...