公司是否掌握M9级板材的制造工艺？深南电路：公司不涉及题述板材的生产

Group 1 - The company, ShenNan Circuit (002916.SZ), has three main business segments: printed circuit boards, electronic assembly, and packaging substrates, with applications in various fields including communication, data centers, industrial control medical, and automotive electronics [1] - The company does not engage in the production of the mentioned substrate materials [1] Group 2 - An investor inquired whether the company's products can support 800G and 1.6T connection adjustments and if the company possesses the manufacturing process or product capabilities for M9 level substrates [3]