Shenyang Koncepnutra Co., Ltd. (Former Shenyang Dongyu Fine Chemicals Co., Ltd.) mainly produces multifarious nutritional ingredients and bulk pharmaceutical intermediates. Our leading products are L-Carnitine base and derivatives. Our production capacity is about 600 tons annually. Besides, we have completed a new compound, L-Carnitine calcium fumarate, with independent patent in China and other main developed countries. Nowadays, we are one of the most professional and the largest manufacturers of L-Carnitine series products in China. Our company has been under ISO9000 quality system since...