在塑料制品瓶底，都有一些数字，这些数字是他们的回收参数。记住，只有2，4，5，7是可以重复使用的，其中2，7，只能是低温使用，高温不可。

#1 PETE is the most widely used plastic in water and soda bottles. When exposed to heat or sunlight, the container will start to degrade. This will not be visible, but the harmful chemicals are breaking down into the contents of the bottle. This bottle should not be reused. It is also porous than most bottles and harbors bacteria easily.

＃1 PETE最广泛使用在瓶装水瓶和苏打水瓶。当暴露在高温或阳光下时，会开始降解。虽然肉眼看不见，但有害化学物质会进入内容物。1号塑料不应该重复使用。此外，1号塑料多孔更容易滋生细菌。

#2 HDPE is typically found in milk, juice, and the reusable water bottles sold empty. This bottle's plastic is considered safe to reuse with cool liquids only. Hot beverages, bleach, and strong detergents can damage the molecule make-up of this plastic and it can break down in the beverage.

＃2 HDPE通常使用于牛奶瓶，果汁瓶，和可重复使用的饮水瓶。这种塑料用于低温饮料时是安全的。热饮料，漂白剂，和强力清洁剂会破坏塑料的分子结构，以致析入液体。

#3 V is typically found in juice bottles. Reuse is not suggested due to the Phthalates that are used to soften this plastic. This type of plastic can leach this chemical into your beverage after repeated reuses.

＃3 V通常用于果汁瓶。由于酞酸酯在生产中用于软化改塑料，不建议反复使用。否则酞酸酯会进入内容物。

#4 LDPE this type of plastic is found in squeeze bottles and flexible container lids. This type of plastic is considered safe to reuse.

＃4 LDPE通常用于可按压的容器及容器盖子。这种类型的塑料可以被安全地重复使用。

#5 PP this type of plastic is found in reusable microwave containers, kitchenware, and the tubs that soft butter or margarine comes in. Always check the container to see if it is microwave safe before using it in that appliance. This type of plastic is safe to reuse.

＃5 PP塑料使用于微波炉安全的器皿，厨具，及按压式软黄油或人造黄油的容器。放进微波炉前一定要查一下是否有“微波炉安全”的字样。这种类型的塑料可以安全地重复使用。

#6 PS this type of plastic is found in egg cartons, Styrofoam cups, and restaurant take home containers. This type of container breaks down quickly and should never be reused. It also should never be used in the microwave which will expedite the break down process.

＃6 PS被用于蛋盒，泡沫塑料杯，外卖打包容器。这种塑料分解迅速，不能重复使用。不能在微波炉里使用，否则加快降解过程。

#7 Other - this plastic is a safe reusable plastic that resists stains. It is used to make baby bottles and some of the sports water bottles that are sold empty. When exposed to hot beverages and strong chemicals it can release bisphenol which is a chemical used in the making of this plastic, bisphenol in high levels have a hormone like effect that effects the brain in animal studies.

第7其他 - 这种塑料可重复，也抗污渍。主要用于婴儿奶瓶和可反复使用的运动水瓶。当暴露在热饮料和强化学物质时，会还原释放双酚A，双酚A也是制造这种塑料的原料，双酚A是一种类荷尔蒙物质，在动物实验中被发现会影响大脑功能。