Dongguan Onestep Packing Material Co., Ltd.

One-step packaging for the EU reach 16 high concern substances (SVHC) specifications, the development of cobalt chloride-free humidity card, the use of color-evident environmental protection materials produced, providing easy to distinguish the color, more intuitive, concise judgment (blue to pink). When dry the humidity card is blue, if the color in the circle from blue to pink, indicating that the humidity in the package reached or exceeded the relative humidity value of the circle.