... 2.Competitive price 3.Delicate craftsmanship 4.OEM Heavy duty export shipping cardboard box 1).The box is made of ... SGS certificate5).Prompt shipment with our reliable forwarder Heavy duty export shipping cardboard box Size Length*Width*High (any size as ... paper: 80gsm - 350gsmduplex grey board: 250gsm-1500gsmcorrugated paper: K, A, B, C; three-layer, five-layer, seven-layer, single face corrugated ...