★The zipper shall be fixed after laying off products. During the fixing, ensure that the direction of pull is along the line of the metal teeth.
★When fixing the zipper, gumwater cannot be smeared on inner rack rail or outer rack rail. Otherwise, the gasproof of airtight zipper will be broken or the zipper will be damaged for it is astringent when zipping it. If gumwater is smeared on the zipper immodestly, use a soft cloth with thinner to clean off the gumwater.