fluting paper,100-180gsm,ring crush:110g>7.1 120g>7.5 ... moisture:7-9%,Quality is stable,Preferential pirce High-strength corrugated paper,100gsm-180gsm,ring crush:110g>7.1 120g>7.5 ... stable,Preferential price. 1.material:recycled paper.2.color:brown3.weight:100-180gsm4.different paper brand,weight,width,sheet,ply and package ...