The registration address of ishibao-bori building materials ltd. Is located in the village of nanyangawa, linshuang commune, hebei province. The registration authority is the city monitoring authority of linsu county, represented by the legal person yoon jiangshan, and operates in the areas of heat insulation, soundproofing materials (except those prohibited and restricted by the state, province, city, county), excavating soil, volcanic rocks, petals, calcium powder, stone sand, boiling stones, processing and marketing; and the sale of clouds, lumberstone, fruit crusts, active charcoal, slurry, barley stone, electrical stones, lumberstone, ceramic balls, iron oxide, silicon ash, sea bubbles, sand, high-mounted land. (projects subject to legal approval may not operate without the approval of the relevant department)