Group 1 - The core business of the company includes the distribution of textbooks, general books, and audio-visual products, as well as supply chain and logistics services [4][5] - The company's primary revenue source is the distribution of general and textbook publications, accounting for 41% of total revenue and contributing 68% of gross profit with a gross margin of 37% [5] - The company holds a unique position in the market as the only authorized distributor of textbooks in Anhui Province, which is a critical aspect of its business model [5] Group 2 - The company lacks publishing capabilities, which is a significant factor in its lower gross margin compared to peers, as its second-largest business segment (supply chain and logistics services) has a gross margin of only 3.4% [5] - The overall gross margin of the company is lower than that of competitors, which typically have gross margins in the range of 30-40% [5]