Beijing-and-deme-mechanisms ltd. Is registered at 1st floor of the 101st floor, building 1-1 to 4th floor of the 10th college of lin-ha avenue in the shuyi district of beijing. The registration authority is the market supervision authority of the suyi district of beijing. The legal person is represented by li guangqiang, and its operations include the sale of machinery and equipment, electronics, mechanical accessories, auto parts, mechanical and electrical equipment, computer software and assistive equipment, hardware and electricity delivery (without electric bicycles), cable cables, tyres, technology development, technical services, technology import and export; import/export of goods; brokering of imports and exports; acceptance of labour services (without queue services, external labour cooperation). (the subject of the market may, in accordance with the law, freely choose to operate projects and carry out business activities; projects which are subject to legal approval and which are subject to the approval of the relevant sector; and activities in which the state and municipal industrial policy prohibits and restricts such projects