The registration address of shandong changji engineering installations ltd. Is located on the third floor of the third floor of the xiangang grand market, no. B-1 latitude 05, located in the city's new district of shandong province, where legal persons are represented on general projects: construction of metal doors and windows; sale of digital video surveillance systems; sale of metal structures; retail sale of hardware products; sale of steel bars; sale of construction materials; sale of building decorations; sale of lighting equipment; sale of lamps; sale of light and cable operations; sale of security equipment; wholesale distribution of five gold products; sale of machinery and electrical equipment; sale of electrical equipment; sale of electrical and electrical components; sale of electrical and electrical equipment; sale of electrical equipment in buildings under the law; sale of electrical and electrical equipment under the contract; sale of electrical equipment under the co...