Cold form alu alu foil is the best composite plate of blocking performance at present with ultimate protection against water, oxygen and UV radiation. It is especially used for the high sensitive range of pharmaceutical and generic medicines which are highly hygroscopic or light sensitive. Cold form alualu foil from some general manufacturers is easy to break the bubble, has pinholes or edge layering after few months, so the blocking performance is compromised. This shows choosing a right cold forming alu foil manufacturer is very important. After years of concentrating on research and development, Hanlin Packaging has mastered its own unique technological system to guarantee stable quality.