4215 - 4216: 产品性能：托盘和固定环配合使用，可牢固固定扇形加热模块，确保实验安全。 用材：采用耐用材料制作，具有良好的稳定性。 参数表： 型号：BK - 18900001（托盘）、BK - 18900065（固定环） 型号：BK - 18900001、BK - 18900065 用途：与扇形加热模块系列联合使用，方便实验操作。 包装：分别包装，便于存储和使用。 使用说明：将扇形加热模块放置在托盘上，用固定环进行固定。 售后服务：我们提供周到的售后服务，如有需要，可随时提供帮助。 Product Details Image: [Insert the detailed images of the blue fan-shaped heating module series tray and fixing ring] Product Performance: The tray and the fixing ring are used together to firmly fix the fan-shaped heating module to ensure the safety of the experiment. Materials Used: Made of durable materials, it has good stability. Parameter Table: Model: BK - 18900001 (Tray), BK - 18900065 (Fixing Ring) Model: BK - 18900001, BK - 18900065 Usage: Used in combination with the fan-shaped heating module series to facilitate the experimental operation. Packaging: Packed separately for easy storage and use. Instructions for Use: Place the fan-shaped heating module on the tray and fix it with the fixing ring. After-sales Service: We provide considerate after-sales service and can provide help at any time if needed.