How to select a qualified bag

The appearance of plastic bags in life plays a major role in providing people with very great convenience, so the use is also very large, in this context, the quality of plastic bags is very critical, follow in our footsteps to see how to choose qualified plastic bags.

Put plastic bags under the lights or in the sun to see, if there are black spots or impurities, do not buy to use, it is made of waste plastic bags, it is likely to be toxic. Be sure to smell when you buy a plastic bag. Qualified plastic bags should be non-toxic and tasteless, without any irritating toxic gases. Smelly plastic bags are added a variety of additives, will cause harm to the human body, so do not buy.

Qualified plastic bag factory strong and durable, very high strength, will not be easily torn off. Unqualified plastic bags add harmful substances and are not strong to use. Easy to break. Good plastic bags make a crisp sound when they shake, and poor plastic bags make small, sultry, low-quality plastic bags. Another way to check the quality of plastic bags is to put them in water. Will float up is non-toxic plastic bags, sinking is toxic plastic bags. Put the plastic bag on the fire and burn it quickly, sending out a flame that is yellow and dripping down the candle. It smells like paraffin. Toxic plastic bags are hard to burn, giving off green flames and giving off a smell.