length * width * rear height * front height(长*宽*后高*前高) five-layer corrugated paper 20*20*30*10(五层瓦楞纸 20*20*30*10) five-layer corrugated paper 28*30*30*10(五层瓦楞纸 28*30*30*10) five-layer corrugated paper 29*10*23*12 flat mouth(五层瓦楞纸 29*10*23*12平口) five-layer corrugated paper 30*14*36*18(五层瓦楞纸 30*14*36*18) five-layer corrugated paper 30*15*18*8(五层瓦楞纸 30*15*18*8) five-layer corrugated paper 30*15*22*8(五层瓦楞纸 30*15*22*8) five-layer corrugated paper 30*18*19*8(五层瓦楞纸 30*18*19*8) five-layer corrugated paper 30*20*22*8(五层瓦楞纸 30*20*22*8) five-layer corrugated paper 30*26*23.5*6(五层瓦楞纸 30*26*23.5*6) five-layer corrugated paper 30*30.5*40*10(五层瓦楞纸 30*30.5*40*10) five-layer corrugated paper 30*33*40*10(五层瓦楞纸 30*33*40*10) five-layer corrugated paper 38*23.3*30*15(五层瓦楞纸 38*23.3*30*15) five-layer corrugated paper 40*27.5*30*15(五层瓦楞纸 40*27.5*30*15) five-layer corrugated paper 40*30*40*20(五层瓦楞纸 40*30*40*20) five-layer corrugated paper 40*36*36*20(五层瓦楞纸 40*36*36*20) five-layer corrugated paper 45*10*24*12(五层瓦楞纸 45*10*24*12) five-layer corrugated paper 45*25.5*30*20(五层瓦楞纸 45*25.5*30*20) five-layer corrugated paper 45*30*20*10(五层瓦楞纸 45*30*20*10) five-layer corrugated paper 49*34.5*36*14(五层瓦楞纸 49*34.5*36*14) five-layer corrugated paper 50*30*30*10(五层瓦楞纸 50*30*30*10) seven-layer ultrahard 50*30*42*20(七层特硬 50*30*42*20) five-layer corrugated paper 50*34*40*20(五层瓦楞纸 50*34*40*20) five-layer corrugated paper 50*37*40*20(五层瓦楞纸 50*37*40*20) five-layer corrugated paper 58*18*30*15(五层瓦楞纸 58*18*30*15) five-layer corrugated paper 58*23*25*10(五层瓦楞纸 58*23*25*10) five-layer corrugated paper 60*15.5*36*18(五层瓦楞纸 60*15.5*36*18) five-layer corrugated paper 60*26*30*20(五层瓦楞纸 60*26*30*20) five-layer corrugated paper 60*30.5*36*18(五层瓦楞纸 60*30.5*36*18) five-layer corrugated paper 60*30*40*20(五层瓦楞纸 60*30*40*20) five-layer corrugated paper 60*36*36*20(五层瓦楞纸 60*36*36*20) five-layer corrugated paper 25*19.5*25*10(五层瓦楞纸25*19.5*25*10) seven-layer ultrahard 55*45*45*30(七层特硬55*45*45*30) five-layer corrugated paper 55*30*30*10(五层瓦楞纸55*30*30*10) five-layer corrugated paper 25*12.5*20*10(五层瓦楞纸25*12.5*20*10) five-layer corrugated paper 25*35*25*10(五层瓦楞纸25*35*25*10) five-layer corrugated paper 25*12*20*10(五层瓦楞纸25*12*20*10) five-layer corrugated paper 48*21*15*10(五层瓦楞纸48*21*15*10) five-layer corrugated paper 28*22.5*30*10(五层瓦楞纸28*22.5*30*10)

strengthen(加强)