The thongjiang cleaning machinery plant of the city of thailand is registered at 28 hin dong road, seamount district of the city of thailand, with the registration authority being the administrative approval board of the seamount district of the city of thailand, represented by a legal person, lu longlin, and covers the manufacture and sale of washing machines, steam heating machines, electric heating machines, gas heating machines, mechanical accessories, import and export of goods and technologies for self-employment and brokering (except for goods and technologies for which the state limits companies ' operations or bans import and export). (projects subject to legal approval may not operate without the approval of the relevant department)