中航光电：三季度盈利水平出现波动主要原因在于公司业务结构、产品结构变化带来的扰动等

Group 1 - The core viewpoint of the article is that AVIC Optoelectronics (002179) reported fluctuations in its profitability for the third quarter, primarily due to changes in business and product structure, as well as rising costs from raw materials [1] Group 2 - The company indicated that structural factors combined with cost pressures from the increase in prices of bulk raw materials have led to a decline in the gross profit margin for the single quarter [1]