What does Baotou factory do for half a year?

Apprentice in single crystal production. Apprentices in Baotou single crystal production need to learn crystal pulling technology and operation in the single crystal workshop, be responsible for high-purity hygiene and secondary feeding in the workshop, and can start working after half a year. Baotou, also known as Jiuyuan and Lucheng, is located in the west of Inner Mongolia Autonomous Region, bordering Mongolia in the north, the Yellow River in the south and Tumochuan Plain and Hetao Plain in the east and west.