Duplex Board White back ( Two Side Coating)
GSM: 250G 300G 350G .400G
Grade : Grade AA and Grade A
Duplex Board Grey back
GSM: 230G , 250G 280G 300G 350G 400G 450G
Grade : Grade AB . Grade A Grade AA , Grade AAA , Grade AAAA
Stiffness: Higher stiffness and smoothly
Coating ; Super White