A twelve year old girl in the UAE got cancer because she used the same mineral water bottle for sixteen months straight. The bottle contains a plastic material called PET, which is safe to use once, but if you use it repeatedly for frugality or convenience, there is a cancer risk. Mineral water bottles have a triangle with arrows at the bottom, the triangle has a number inside. General mineral water bottles, the bottom labeled 1 Nongfu Mountain Spring 4 liters, the bottom labeled 2 tea making plastic heat-resistant cups, the bottom labeled 5 PET polyethylene terephthalate common mineral water bottles, carbonated beverage bottles, etc. Heat-resistant to 70 ℃ easily deformed, there are harmful substances melted out. 1 plastic products used for 10 months, may release carcinogens DEHP. can not be placed in the car in the sun; do not contain wine, oil and other substances. HDPE high-density polyethylene Common white medicine bottles, cleaning products, bath products. Do not use again as a water cup, or used as a storage container for other items. Cleaning is not complete, do not recycle. PVC Polyvinyl chloride Commonly used for raincoats, building materials, plastic films, plastic boxes, etc. It has excellent plasticity and is cheap, so it is commonly used. It is rarely used for food packaging because it is easy to produce bad substances at high temperatures. Difficult to clean and easy to leave, do not recycle. Don’t buy it if it is used for drinks. PE polyethylene common cling film, plastic film, etc. Harmful substances are produced at high temperatures, and when they enter the body with food, they may cause breast cancer and birth defects in newborns. Cling film do not enter the microwave oven. PP polypropylene Commonly used in soy milk bottles, yogurt bottles, juice bottles, microwave lunch boxes. With a melting point of 167°C, it is the only plastic box that can be placed in the microwave oven and can be reused after careful cleaning. Note that some microwaveable lunch boxes are made of No. 5 PP, but the lid is made of No. 1 PE. Since PE cannot withstand high temperatures, it cannot be put into the microwave oven together with the box. PS polystyrene common bowl noodle box, fast food box. Can not be put in the microwave oven to avoid the release of chemicals due to high temperature. Acid (e.g. orange juice) and alkaline substances will be decomposed and carcinogenic substances will be released. Avoid using fast food containers to pack boiling hot food. Don’t use microwave oven to cook instant noodles in a bowl. PC other categories common water bottles, space cups, milk bottles. Department stores often use these materials as giveaways. It is easy to release the toxic substance Bisphenol A, which is harmful to humans. Do not heat when using, not in direct sunlight.