... 3. Brightness:90%-110% 4.GSM:70,75,80 Copy Paper Size:A4 / A3Brightness: 90-110% Weight: 70gsm,75gsm,80gsm Materials: 100 ... ItemA4 Copy PaperMaterial100% wood pulp or othersSizeA4, A3, Letter size(8.5x11),Legal size(8.5x14)Base Weight80gsm, 75gsm, 70gsmWhiteness90-110% Packing500 ... 2. Workshop3. Semi-finished product4. Package5. Warehouse6. Shipment A4 copy paper