The registered address of the marketing office of the mu yi construction instrument in the city of jiozhou, hebei province, is the village of yoon tong, guo zhengzhou, the registered body is the voivodship business administration and is represented by a legal person, li yang, who operates in the areas of experimental instruments, construction instruments, sanitation equipment and the sale of hardware and materials (project authorized by law and approved by the relevant department before starting operations)