三变科技：公司产品主要为油浸式变压器、干式变压器、组合变压器等

Core Viewpoint - The company, Sanbian Technology, primarily produces oil-immersed transformers, dry-type transformers, and combined transformers, which are essential for power conversion, transmission, boosting, and reduction, and are widely used in State Grid Corporation and photovoltaic enterprises [1] Group 1 - The main products of the company include oil-immersed transformers, dry-type transformers, and combined transformers [1] - These products are utilized for power conversion, transmission, boosting, and reduction [1] - The company's products have significant applications in major sectors such as the State Grid Corporation and photovoltaic enterprises [1]