Retail sale of propane for use as fuel; retail, online retail and wholesale sales of propane tanks and parts and fittings therefor; retail, online retail and wholesale sales of pressure regulating valves and natural gas valves; retail, online retail and wholesale sales of propane gas meters; pressure gauges; pressure meters; pressure recorders; pressure sensors; retail, online retail and wholesale sales of propane appliances, namely, industrial furnaces and residential furnaces, and propane gas vaporizers, hot water heaters, fridges, stoves, barbeques and fireplaces; Custom manufacture of storage tanks; Gas pressure regulator for controlling the pressure and flow of gas for welding safety; pressure regulating valves; Propane gas meters; pressure gauges; pressure meters; pressure recorders; pressure sensors; Propane tanks;