Guangdong Tengen printing co., ltd. The first professional integrated manufacturer of fast express material in China. The biggest production base of postal express material in China. Professional integrated manufacturer of post express material. we have staff 1, 000, and base factory have 60, 000 ㎡ in Dongguan, we also have branch factory in Beijing and shanghai, at the same time we have branch office in each province.we main to produce waybills, document envelope, plastic mailing bags, packing list envelope, bubble bags, seals, packing tapes, adhesive sticker, shipping cartons.