Beijing Shengmingzhiquan Bio-Medical Institute is selling GenSci's Jintropin. Produced by GenSci, Jintropin is the most famous brand products of best quality in the world for bodybuilding (for muscle-building). Jintropin is anti-aging. We are a trustworthy and credible supplier and global shipper for worldwide customers, and every kit of jintropin we sell has anti-counterfeiting numbers and fiber. You can check them out on GenSci's official website. We can promise our jintropin is 100% GenSci's products.