How to judge whether a straw is food grade?

First, see if there is a QS logo on the outer packaging of the straw. If there are black spots, impurities or broken bubbles in the straw, it is the characteristic of unqualified products.

2。 Second, smell whether there is a pungent smell before the straw touches the drink. If it smells, there may be something wrong with the straw.

3。 Last but not least, if you pinch the straw, it will be flat and inelastic, which means that the straw is made of relatively thin material with poor quality and can be easily sucked flat during use.