Businesses in this category produce or process gaseous fuels and arrange their storage, transport or supply to homes, businesses and industrial users. This may include natural gas, liquefied petroleum gas (LPG), biogas and gases made from other feedstocks. Activities can range from treating gas to meet required specifications to compressing or liquefying it for storage and delivery. Customers may receive gas through a mains network, in cylinders or in bulk tanks, depending on the type of gas and their location and needs. Suppliers may also provide delivery, meter or tank installation, maintenance and account services. Some businesses focus on industrial and specialist gases used in manufacturing, healthcare, laboratories or food production, and may supply associated cylinders, regulators and handling equipment. Gas production and distribution are distinct from the installation or repair of domestic boilers and other gas appliances.