Manufacture of electric power distribution transformers, arc-welding transformers, fluorescent ballasts, transmission and distribution voltage regulators
Manufacture of machinery for washing, bleaching, dyeing, dressing, finishing coating or impregnating textile fabrics, machines for reeling, unreeling, folding, cutting or pinking textile fabrics, and similar machinery for fabric processing
Manufacture of non-motorized bicycles and other cycles, including cycle-rickshaws, (delivery) tricycles, tandems, children���s bicycles and tricycles, baby carriages
Operation of sand or gravel pits, basalt / porphyry, clay (ordinary), crushing and breaking of stone for use as a flux or raw material in lime or cement, manufacture or as building material, road metal or ballast and other materials for construction