After-school tutoring in primary school Chinese, mathematics, and English; after-school tutoring in middle school Chinese, mathematics, English, physics, chemistry, and politics; art training, music training; food sales; and book sales. Chengde Shuangluan District Aituosi Training School Co., Ltd. was established in 2020 and is located in Chengde City, Hebei Province. It is an enterprise mainly engaged in education. The registered capital of the company is RMB 300,000.