Group 1 - The core point of the news is that the waste paper purchase price has been increased by 30 yuan/ton, resulting in a new price of 1680 yuan/ton, indicating strong market demand likely driven by increased production needs in the paper products sector [1][4]. - The increase in waste paper prices is expected to directly boost the spot market trading prices and stimulate supply-side activity [2][5]. - The pricing model used by the company is based on big data and a pricing model, which serves as a trading guide price, known as the "Shengyi Price" [2][5]. Group 2 - The pricing formula for determining transaction settlement prices includes an adjustment coefficient (K) that accounts for factors such as account period costs [2][5]. - The additional costs (C) in the pricing formula include logistics costs, brand price differences, and regional price differences [3][6].