In the first two months of this year, Henan Kaifeng Dongda Chemical Co., Ltd. achieved a foreign exchange earning of USD 2.01 million, a year-on-year increase of 268%. Dongda Chemical Co., Ltd. has done a great deal of "addition and subtraction" in its product structure: on the one hand, it has increased the output of products with strong profitability such as caustic soda, ADC foaming agents, and chloroacetic acid; on the other hand, it has reduced profitability such as hydrochloric acid and liquid chlorine. The output of the product. Elevator Eld Display,Elevator Indicator Plate,Elevator Indicator STAR Imp & Exp Co., Ltd. , http://www.hzelevator.com