Plant growth regulator is a kind of substance which inhibits or promotes the growth and development of plants. Includes synthetic compounds and natural plant hormones extracted from organisms. It is widely used in agricultural production around the world to question its safety. Industry insiders pointed out that according to the batch test results, do not see the existence of plant growth regulators. 
Past experience has shown that even widely used products are not necessarily safe
 it can be considered that the safety of plant growth regulator is more reliable.