Grade 1 in the field of water , 4 authorized work
Grade 1 in the field of agriculture , 4 authorized work
Grade 1 in the field of Road and transportation , 4 authorized work
Grade 1 in the field of installation and equipment of water , 4 authorized work
Grade 5 in the field of Construction and Building , 2 authorized work
Grade 5 in the field of Field Explorations and Industry and mine , 2 authorized work