博科测试：公司主要的原材料包括各类的机械、电子电器产品

Core Viewpoint - The company emphasizes the importance of supply chain management and raw material procurement for operational quality and cost control [1] Group 1: Raw Materials and Supply Chain - The main raw materials for the company include various mechanical and electronic products [1] - The company will dynamically track and manage procurement costs based on external factors such as raw material price fluctuations and supply chain adjustments [1] - Current procurement costs are reported to be within a reasonable range [1]