... :70micron3.different sizes are available.4.Scope of use: Suitable used to items such as clothing , ... moulds,humidity,bad smell ,keep clothes clean.6)Use slider zipper which can make sealing easy and ... dust ,which will reduce the sealing performance,please use clean water on gauze ,and other mouth closed ... ,cleaner load increase,easily lead to failure.11.Use hand to squeeze the vacuum bag,which can help ...