De-humidifiers for horticultural use, de-humidifiers for agricultural use; Apparatus for controlling water supply, namely, regulating accessories for water supply in the nature of one-way valves, four-way valves, water control valves for faucets; Automatic agricultural irrigation units, namely, irrigation sprinklers, irrigation valves and pumps being sold in combination for use with automatic watering installations in hydroponic systems; nutrient-film technique valves being plumbing fittings,...