Group 1 - The core viewpoint of the article is that Invt (002334) has successfully achieved mass production of control boards for its complete machine products in the South China region, which includes network energy, photovoltaic, and new energy vehicle controllers [1] Group 2 - The control boards are specifically used in the complete machine products produced by Invt in the South China region [1] - The company has confirmed the mass production status of these control boards in response to investor inquiries on its interactive platform [1]