Shandong Tiantai Steel-Plastic Co., Ltd. (gts for short ) was established in March 2005 and listed at London Stock Exchange in 2014. The registered capital is 35.4 million yuan. It is located in Gaotang Liaocheng city, covering an area of 200000 square meters. It was more than 500 employees including 40 high-tech professionals. All of the employees have extensive experience. The leading products for export are Ammonium sulfite and Ammonium bisulfite. Also GTS is the largest producer of Ammonium sulfite and Ammonium bisulfite in china. The products are mainly exported to Russia, German, Columbia, Iran, Oman, Southeast Asian, Latin America Middle East and so on.