Formalin is a chemical compound used to preserve any thing which are required in research or other purpose. But if it is applied to preserve food such as fruits, fish etc. for long time & by applying in large amount it will be harmful for human body if any human being eat these preserved foods. It can create many physical disorders in human body including liver damage, kidney damage, cancer or many other disorders. This chemical is used by some greedy businessman in 3rd world country & that's the number of patients are increasing day by day. It should be stopped as soon as possible otherwise this problem will get worst in situation day by day.
