General items for the installation, maintenance and testing of power transmission, power supply and power receiving facilities: hydraulic power machinery and component manufacturing; silviculture and wood and bamboo harvesting machinery manufacturing; arts and crafts and ceremonial supplies manufacturing (except ivory and its products); pneumatic power machinery and component manufacturing; security equipment Manufacturing; metal tool manufacturing; pneumatic and electric tool manufacturing; automobile parts and accessories manufacturing; motorcycle spare parts manufacturing; agriculture, forestry, animal husbandry and fishery machinery parts manufacturing; mechanical parts and component processing; photovoltaic equipment and component manufacturing; goods import and export; technology import and export; import and export agency