Haihang Industry Co.,Ltd was built in 2010. we are a professional manufacture for Folic acid cas 59-30-3. Our factory is located in Shandong Province.Zhangqiu city Industry Park. Another manufactre is locted in Shandong Province.Linyi City Industry Park. Since the beginning of 2015. China government has made high strict enviroment poliy to control the environment. There are three big manufacture of Folic acid has been forced to stop to produce this product.