The registration address of the centre for the marketing of engineering machinery (part-time industrial and industrial) is at 480 no. 480 of the village of san yuan, huang zheng town, chiang county, shandong province. The registration authority is the ka zhang county market supervision authority, represented by legal person liu jin-jing, and operates on general items: sale of mechanical equipment; distribution of parts for cars; sale of machinery for construction works; sale of agricultural machinery; sale of specialized equipment for environmental protection; sale of the internet (other than the sale of goods for which permission is required); and live personal internet service. (in addition to projects subject to authorization under the law, the operation of the business is carried out autonomously under a licence)