How does linzi qiquan industry and trade go to work?

Does the subject want to ask, "How many classes are there in Linqi Qiquan Industry and Trade?" Three shifts. Zibo Linzi Qiquan Industry and Trade Co., Ltd. was established in June 2003, located in Liuwei Road, Qilu Chemical Industry Park, Zibo City, Shandong Province, with a registered capital of 30 million yuan and an area of 30,000 square meters. Linzi Qiquan Industry and Trade has three shifts. Three shifts and two shifts are an arrangement for employees to go to work. Three shifts take turns to work. In principle, each shift works once 12 hours, and the day shift rotates at night.