The registered address of tianjin songi business and trade ltd. Is south of chongqing road in tianjin free trade test zone (tongjibong tax port zone), building 4, 7-401 (keyer no. 221 of tianjin port commercial secretary services ltd. On khorenbel road) and is the market supervision authority of china's free trade test zone (tianjin) with legal representatives lin xin, operating in the areas of chemical raw materials and products, electronic products and accessories, hardware, mechanical equipment and accessories, sales of construction materials, self-employment and brokering goods and technology import and export operations. (projects subject to legal approval before operating with the approval of the relevant department)***