building insulating, building sealing services, furniture varnishing, demolition of buildings, plastering, plumbing, road paving, tunneling, dredging of waterway, rivers, lakes and marshes, water supply and drain facility work, mining extraction, changing of lubricant for motor vehicles and construction machines, vehicle greasing, motor vehicle maintenance and repair, anti-rust treatment services for vehicles, pump repair, retreading of tires, repair or maintenance of industrial boilers, motor vehicles, parking lots, air compressor, metal working machines and tools, cranes, optical apparatus and instruments, mining machines and tools, construction equipment, computers, airplane, ejection molding machines, hydraulic machinery and tools, measuring machines and tools, air conditioning machines, electric and magnetic measuring instruments, cargo handling machines, electronic distribution or control machines, conveyor belts, engines and motors, snowplows; installation of air conditioning machines; installation, maintenance and repair of industrial machines, office machines and equipment, installation of solar heat water heaters, installation, repair or maintenance of machines and plants in the fields of pulp and paper making; providing information regarding the repair or maintenance of automobiles and ships, general building construction, general civil engineering construction, underwater construction, factory construction, harbor construction, pipe line construction and maintenance, warehouse construction and repair, pier breakwater construction; supervision of building construction, operation of waste disposal facilities, cleaning, maintenance and operation of sewage disposal tanks, cleaning of buildings both interior and exterior, window cleaning, rental of construction equipment, construction machines and cargo handling machines, rental of fishing machines, rental of mining machines and tools, power machines, pneumatic machines, hydraulic machines, measuring machines, combines, mowing machines and heating and air conditioning equipment, construction planning, interior sealing and caulking

Collection and destruction of industrial waste

Testing of oils from machines and vehicles to determine degree of metal abrasion density; designing of bulldozers, loaders, dozer shovels, wheel loaders, power shovels, dump trucks, motor graders, tire-rollers, road rollers, vibration rollers, self-traveling cranes, drilling and boring machines, internal combustion engines, steam engines, jet engines, turbines, press machines, electronic circuits, telecommunication machines, hydraulic machines, electronic control machines, semiconductor manufacturing apparatus, machine tools, sheet metal processing machines, tunneling machines, industrial robots, incinerators, waste plastics recycle plants, multi grafting machines, waste wood crushers; consultation services regarding the performance and operation method of machines which require highly developed expertise and experience to allow for accurate compliant operation with computers and automobiles, computer programming, rental of computer; drafting and surveying of construction