The registration office is the market supervision authority of the city of huencheng, hebei province. The legal entity is represented by wang kunlun and operates in the following areas: construction, installation, design and sale of metal doors and windows, radiation-proof doors and windows, fire-proof doors and windows, stainless steel doors and windows, prison doors and windows, industrial doors, burglary doors, building doors, vault doors, distribution doors, sick bay doors and windows, blind doors and windows, plastic doors, aluminium gold windows, tailing doors, accelerators, atm doors, glass windows, curtain windows, blast-proof windows, blast doors and windows, anti-blast doors and wooden windows; and installation of products, construction and maintenance. (projects subject to legal approval before operating with the approval of the relevant department)***