How to distinguish plastic straws between good and bad ?

The first is "see", to see whether the outer packaging of the straw have QS and color or not, if it has color, the safety of the straw will be reduced,especially the kind of dark colour should be paid more attention. black spot impurities or broken bubbles in the straw, these are the characteristics of unqualified products.

The second is "smell", to smell a straws whether has pungent smell or not before we use it.

The third thing is “pinch”, the straw is flat without elasticity if you pinch, it means that the straw is made of thin material, poor quality, and it will be easy to be sucked flat in the process of use.