To user can relief of using, handle by quality technology supervision Council issued of special equipment manufacturing license, strictly according to license requirements selection, and manufacturing, and test factory; existing shell tube type water condensation device, and seawater type water condensation device, and straight tube type (u type) single double machine dry type evaporator, and storage liquid device, products; for heat covers has from 8.3KW to 397.8KW; applies Yu R134a • R404A • R507A • R407C • R22 various refrigeration agent