(1) Chemical industry: In washing sink, chemical barrel, tank, oil tank, storing tank for brewing water, acid-alkali synthetic tower and photo-developing instruments.
(2) General industry: In cooling tower, air washer, cover for ventilator, water tank, combined dust remover, lining of cement tank and windshield for motorcycles.
(3) Electrification and electrical industry: In electronic tower, battery box, electrometer plate, upper cover, under plate for radio set as well as plates for electrical insulation.
(4) Air conducting pipe engineering: air conducting or exhausting engineering as high (low) speed air conducting, central system of air conducting. Intake (Exhaust) air conducting, and cycling air conducting engineering operations.
(5) Others: In stationery, materials, building and miscellaneous processing.