a4 paper A3, A4, B4, B5, 8.5X11", 8.5X13", 8.5X14", 11X17", OEM service a4 paper,We are able to ... supply large quantity and best quality copy paper. For 70gsm, A3, A4, B4, B5, 8.5X11", 16K, 8K are available ... ; For 80gsm, A3, A4, B4, B5, 8.5X11", 8.5X13", 8.5X14", 11X17 ... guess what, 75gsm are aslo under production, there are A4, 8.5X11", 8.5X13", 8.5X14", and 11X17". ...