The registered address of the royal crown gate control company ltd. Of suzhou is in the van hsang development zone of the town of wu gang zhuang, with the registration authority being the administrative approval board of the city of suzhou, u jiang zhuang district. The legal entity is represented by yang guo yuan and operates in the areas of flat-opening machines, closed doors, sensory doors, electronic locks, hardware products (free of electroplating), steel doors and windows, fastening units, springs, lift parts, manufacture, processing and sale of environmentally friendly mechanical parts; sale of metal materials, rubber seals (except rare metals); import and export operations of goods and technologies (except goods and technologies for which the state limits business operations or prohibits imports and exports). (projects subject to legal approval may not operate without the approval of the relevant department)