BEIJING JINGHUAYONGXIN SCIENCE & TECHNOLOGY DEVELOPMENT CO.,LTD is a professional pharmaceutical corporation which combined with the researching ,producing, and sales function, and owns outstanding technology person, religious management style, excellent and specialized researching and sales team. BEIJING JINGHUAYONGXIN SCIENCE & TECHNOLOGY DEVELOPMENT CO.,LTD has two factories located in the Zheiang and Jiangsu province. The factory occupies 10760 square meter 65292; the area of producing plant is 2600 square meter, there are more than 100 employees in our company. And our company has a 300 square meter chemical synthesizing laboratory ,we can produce some specifically chemicals or intermediates of Erythromycin ramification according to the clients' requirements