In March and April 2018, the 2 technical grade factories were stopping producing and making maintenance. During this period, the HR department organized a 3-days overall training for all the workers. The trainers are from the departments of Safety, Technology, Quality and Environment Protection. Total 440 workers took part in the training. The is the first time that we organized the specialized one training for all workers. Because workers are at the time free of working, they can focus on the learning, the effectiveness of knowledge improving are proved to be obvious.