Shandong Chengzhi Linghua Biological Engineering Co., Ltd was jointly set up by Chengzhi Co., Ltd held by Tsinghua Holdings Limited and Linghua Group Corporation Limited in April 2003 with a registered capital of 50 million Yuan. Business scope include: development, production and sales of L-glutamine and amino acid series products. Main products include L-glutamine fermentation and nucleotides fermentation. L-glutamine has a wide range of use in medicine and sports nutrition and health. Market covers pharmaceutical raw materials, health and nutrition, additives.

    2000 tons of L-glutamine project adopts the most advanced equipment and technology and automatic control devices. The total investment is 200 million Yuan, annual sales income can reach 150 million Yuan, profits and taxes 40 million Yuan. The first phase was completed and commissioned in September 2006. It will become the world's largest supplier of L-glutamine after completion.