Group 1 - The core point of the article is that the company, 雷赛智能, confirmed its involvement in the photovoltaic business during the first half of the year [1] Group 2 - Investors inquired about the company's photovoltaic business on an investor interaction platform [1] - 雷赛智能 responded affirmatively, indicating that it still has photovoltaic-related business activities [1]