At present, the following types of question banks are provided:
Refrigeration and Air Conditioning Decoration (00100)
Indoor Wiring-Indoor Wiring Decoration (00700)
Automobile Maintenance (02000)
Boiler Operation (03100)
Construction Engineering Management (06900)
Lithography (08700)
Occupational Safety Management ( 22000)
Occupational Health Management (22100)
is being added one after another...
