The above image is the one that is bothering me lately.. It is all about plastics and also about the most dangerous plastics.. The ones marked in RED are said to be the most dangerous ones. The various elements that are used to make these plastics are specified. For further details visit the site: http://www.epd.gov.hk/epd/english/environmentinhk/waste/guide_ref/guide_plascod3.html
Please don't use these plastic bottles. The codes are not mentioned just for the sake of recycling. The main reason is that it specifies the chemicals that are used in making the bottle. :( I am a lot worried. Sometimes the water doesn't taste the usual way.. So this is the reason behind it! Look out for dangers in the elixer of life too!