Ascorbic Acid Powder CAS 50-81-7 price ABOUT CIYUAN BIO Ciyuan Bio is a professional hi-tech company expert in developing, producing and marketing various plant extracts. Our company was established in 2001; we are a comprehensive plant extraction enterprise integrating R&D, production and sales. Our production base is located in the Induatrial Park of Fufeng county, Baoji City, one hour's...