... envelopes in high speed and automatically. Environmental protection envelope,Kraft paper envelope Characteristics and futures1) Size: ... paper70gsm,80gsm,100gsm,120gsm Special paperDifferent special paper will have different weightPearlescent paper120g,180g,200g ... plus plasticHandlePP, Cotton, Silk, Polyester + cotton, twisted paper cord, nylonMethodKnot, Shoelace buckle handle rope, handle inside ...