Established year-round: forklift drivers, bridge crane drivers, gantry crane drivers, mobile crane drivers, gantry crane drivers, construction welders, construction electricians, construction crane rigging signal workers, construction scaffolders (ordinary scaffolding), construction scaffolders (attached lifting scaffolding), high-altitude operation basket installation and dismantling workers, construction elevator drivers, material elevator drivers, construction tower cranes, low-voltage electrician operations, high-voltage electrician operations, melting welding and hot cutting operations, high-altitude erection operations, high-altitude installation, maintenance, dismantling operations, refrigeration and air conditioning installation and repair operations, production unit leaders, safety production management personnel, hazardous chemical workers, toxic and harmful confined space operations, etc.