Bath tub jets; wash basins being parts of sanitary installations; Toilet seats; flushometer valves; shower mixing valves; Shower heads; Bath installations; Automatic flush valves for toilets; Hydrants; Plumbing fittings, namely, faucet filters; Water purifying apparatus; Water filtering apparatus; Water softening apparatus and installations; Electrolytic water generators for electrically decomposing tap water to generate electrolytic water and for removing chlorine odor from tap water; Air-conditioning, air cooling and ventilation apparatus and instruments; Ventilating fans for commercial and industrial use; Air purifying apparatus and machines; Air conditioning apparatus; Air filtering installations