The registration address of chua ya jiamen industries ltd., nakayama city, is at card number 30, no. 3, east-shang town, nakayama city. The registration authority is the market supervisory authority of nakayama city, represented by a legal person, and includes the production, processing and sale of: door products, wood products, aluminium alloy windows; import/export of goods; and import/export of technology. (projects subject to legal approval are not allowed to operate without the approval of the relevant authorities) i'm not sure