东威科技：目前公司光伏设备产品用于HJT电池，暂时不涉及topcon和钙钛矿电池的设备

Group 1 - The company currently produces photovoltaic equipment for HJT (Heterojunction Technology) batteries and does not have equipment for topcon and perovskite batteries at this time [2] - An investor inquired about the company's capabilities regarding topcon and perovskite battery equipment on an investor interaction platform [2] - The company's response indicates a focus on HJT technology, suggesting a potential area for future development or investment [2]