NISP level 1: online learning, online examination. 500 class hours, about 45 minutes per class hour.

NISP level 2: online learning, offline examination. The 48-hour course is equipped with paper textbooks, which are exactly the same as the learning content of CISP, in the same examination room.

NISP level 3: offline learning and offline examination. The basic class stopped production in March, and the quality class stopped production for 45 days.