The registration address of the company is located in room 01, no. 178, north park village, hae-ryong city, yujong city, shandong province. The municipal market supervisory authority, which is represented by legal persons, operates in the areas of research and development, production and sale: heat exchangers, heat exchangers, air coolers, oil coolers; processing, marketing and maintenance: mechanical equipment; import/export of goods; and import/export of technology. (projects subject to legal approval may not operate without the approval of the relevant department)