One Step (Dongguan) Packing Material Co., Ltd. (hereinafter referred as One Step Packaging) is located in Dongcheng District, Dongguan City of Guangdong Province.One Step Packaging is a manufacturer of humidity indicator cards. We provide companies with many professional packaging solutions featuring anti-moisture, anti-rust, fresh-keeping and anti-shock, with comprehensive product range, good quality, timely delivery, and reasonable prices. As the increasing of material cost and the awareness of environmental protection, more and more attention is put into the issue of how to select...