Tel：+86 13552014099 ( Wechat / Whatsapp )
E-mail：sales@yuyanbiotech.com
quanquan1965@163.com
Addr：J122，CHANGHONG WEST ROAD NO.73, XILU STREET, FANGSHAN DISTRICT, BEIJING,
BEIJING YUYAN BIOTECH CO., LTD
J122，CHANGHONG WEST ROAD NO.73, XILU STREET, FANGSHAN DISTRICT, BEIJING,
102488, CHINA
Mob:+86 13552014099 ( Wechat / Whatsapp )
Email: sales@yuyanbiotech.com|quanquan1965@163.com
