12.Why the coffee bag will have a piecs of coffee valve in it? And how to make the coffee valve into the coffee bag ????

Maybe you are confusing that why the coffee bag need to with the coffee valve while you saw on the sheet from Supper market.Maybe you have thought that how does this little coffee valve be made into a piece of coffee bag? 

Now,this short vidoe can tell you how to install the little plastic coffee valve into the pieces of coffee package by the little and easy control machine. 
Semi-Automatic Coffee Valve Applicator Machine --CSM01 from Color Suns Company Limited: 
www.colorsuns.com 

Contact : Hebe Mai, hebe@colorsuns.com 
or sales@colorsuns.com 

Welcome to share us more your opinion after watching this video. 
Have a good time for your watching.