factory express envelope wholesale free shipping medium waterproof thickened customized black self-sealing large bag small size packing bag 厂家快递袋批发包邮中号防水加厚定制黑色自封大号袋子小号打包袋

black thin-semi-new material-cost-effective black thick-semi-new material-safety seal

15*25 [buy 100 and get 200 for free, 300 in total]] 17*30 [buy 100 and get 200 for free, 300 in total]] 20*30 [buy 100 and get 100 for free, 200 in total]] 25*35 [buy 100 and get 100 for free, 200 in total]] 20*35 [buy 100 and get 100 for free, 200 in total]] 28*42 [1 bundle/100] not cost-effective 28*42 [buy 100 and get 100 for free, 200 in total]] 30*42 [1 bundle/100] not cost-effective 30*42 [buy 100 and get 100 for free, 200 in total]] 32*45 [1 bundle/100]] 35*45 [1 bundle/100]] 38*48 [1 bundle/100]] 38*52 [1 bundle/100]] 40*52 [1 bundle/100]] 42*52 [1 bundle/100]] 40*55 [1 bundle/100]] 45*55 [1 bundle/100]] 40*60 [1 bundle/100]] 45*60 [1 bundle/100]] 45*65 [1 bundle/100]] 50*60 [1 bundle/100]] 50*70 [1 bundle/100]] 60*70 [1 bundle/100]] 50*80 [1 bundle/100]] 60*80 [1 bundle/100]] 17*30 [1 bundle/100] not cost-effective 20*30 [1 bundle/100 pcs] not cost-effective 25*35 [1 bundle/100] not cost-effective 20*35 [1 bundle/100 pcs] not cost-effective