Derain Ingredients Co., Ltd, was established in the early 2000s in shanghai, China. We are dedicated to supplying high quality and innovative raw materials to end-users and contract manufacturers across the globe. Our specialty products are L-Carnitine, amino acids, vitamins and nutritional supplements. With many years’ experience in pharmaceutical and industry, Derain is recognized as one of the most efficient and reliable suppliers in China. To best serve our customers, shanghai office and our USA warehouses work together in timely manner with a commitment provide exceptional product and quality service as always.