The registration address of the city of the river is richang in the town of sha river bridge in the city of the river. The registration authority is the inter-city market supervision authority, represented by the legal person li. The activities include the sale of insulations, isolation switches, line golds, distribution tanks, distribution cabinets, parts for transmission of electrical equipment, smelting machines, mine avoidance devices, steel core aluminum winch lines, cable cables (except for national industrial policy restrictions or phase-out) and import and export of the enterprise's products. (projects subject to legal approval may not operate without the approval of the relevant department)