Thanks for your information!
For the adhesion problem I want to confirm if the sample you mentioned is used for spary weight? because the sheet(10cm*10cm) used for checking spray weight is kept for a long time when I stay in Rayong plant, so how about another sample with full width(7M*30cm)? also as you know the environment temperature in Suzhou currently is lower, so I will check temperaure or pressure as your advice and do more test to make sure the result meet our requirement.