The registration address of the ishia jia jiae-san building design and installation company, ltd., is located at the south end of the intersection of shi jia zhuang and ishi fong road in hebei province. The registration authority is the market supervision authority of the chang an district, represented by a legal person, zhang yu xing, and its operations include the sale and installation of building materials and sanitary and cleaning materials; and the design and construction of interior and outdoor decoration works. (projects subject to legal approval may not operate without the approval of the relevant department)