华明装备：公司的主要业务是变压器分接开关

Core Insights - The company primarily focuses on transformer tap changers, which are typically used in transformers rated at 35kV and above [2] - The demand for the company's products in the wind power sector is limited, as they are only required in the booster stations of wind power generation projects [2] Company Overview - The main business of the company is transformer tap changers [2] - The application of the company's products is primarily in high-voltage transformers [2] Industry Context - The annual demand for the company's products in the wind power sector is relatively small [2]