Our company, Yinfeng Pharmaceutical Co.,Ltd., is specialized in manufacturing menthol crystal and peppermint oil, menthol palm... The annual production is 2000mt menthol crystals and 800mt peppermint oil. We are the only one in chinese menthol field which passed the FDA. With complying with USP/BP/GB standard & kosher/halal qualified, our products are supplied to masses of global companies, like Colgate, P&G... and enjoyed good reputation.