Changzhou Longterm Biotechnology Co., Ltd. is a research-driven and customer-focused company with head office located in Changzhou, Jiangsu, China, and sales office located in Xi&＃039;an, Shaanxi, China. As a professional manufacturing company, we discover, develop and commercialize innovative active pharmaceutical ingredients (APIs), cosmetic ingredients and dietary supplements, etc, both synthetical and natural, that enable people to live life to its greatest potential — to see more clearly, move more freely and express themselves more fully. We have the capacity to supply our products from grams to multi-kilogram quantities and are committed to providing value to our customers through our extensive range of differentiated products, dependable quality, competitive pricing and excellent customer service. All our staff work together to create new paths to health and wellness and more benefits for our customers. We have initiated extensive business cooperation in many countries and regions such as USA, Europe, Australia, and Southeast Asia, etc. We have been enjoying high reputation for superior quality and excellent services in world market.