The registration address of pet, beijing, is in room 202, 5nd floor, haihawk road, tondai city, beijing. The registration authority is the market supervision authority of the tondai district of beijing, represented by a legal person, li xianwei, and covers technical development, technology transfer, technical advice, technology promotion, technical services; economic information advice; market surveys; software development; and the sale of instrument instruments, electronics, mechanical equipment, electrical equipment, electronic devices. ((enterprises are legally free to choose their own business projects and to carry out their business activities; projects that are subject to legal approval and that are subject to approval by the relevant sector; and not to engage in business activities that are prohibited or restricted by municipal industrial policy.)