Get in Touch Numbers 13917547174 Email contact@yichen-bio.com Wechat 13917547174 Nantong Yichen Biological Technology Co., LTDAddress: Room 01-501, Building 28, Chechuang Zhiche City Park, #259 Shibei Hi-Tech Road, Chongchuan District, Nantong CityE-mail: contact@yichen-bio.com.