Technology development and promotion; economic information consulting; organizing cultural and artistic exchange activities; conference services; hosting exhibitions and displays; computer animation design; engineering survey and design; interior decoration engineering design; sales of machinery and equipment, building materials, Wujiaodian, metal materials, Electronic products, chemical products, stationery, sporting goods, handicrafts, computer software and auxiliary equipment. (Market entities are free to choose business projects and carry out business activities in accordance with the law; projects that require approval in accordance with the law shall carry out business activities in accordance with the approved content after approval by relevant departments; they are not allowed to engage in business activities that are prohibited or restricted by national and municipal industrial policies. )