280gsm grey core cardstock, sheets size: 660*895mm or 710*905mm, promotion quality. 285gsm blue core cardstock, sheets size: 720*910mm, 660*900mm, 545mm width web, retail quality. 300gsm or 350gsm art, sheet size: 660*896mm, 730*940mm. 310gsm Chinese black core, sheet size: 605*560mm or 545*650mm. 1-3mm thickness rigid cardboard for flash cards, memo games and game boards. 310gsm Germany black core cardstock, sheet size: 600*565mm or 545*650mm. 250gsm to 350gsm C1S cardstock for the box. 128gsm, 157gsm, 180gsm art paper for rigid box cover. 800gsm, 1000gsm, 1200gsm greyboard for rigid box. You also can send your requirements to info@suntree.asia.