[Changguang Huaxin: the company's new product (56G PAM4 EML optical communication chip) is currently in the verification stage]. On June 15th, Changguang Huaxin issued a stock price change announcement, which has brought high attention to market hotspots such as 400G and 800G high-speed optical modules due to the recent increase in computing demand. In the field of optical communication, the new product (56G PAM4 EML optical communication chip) developed by the company is currently in the verification stage, and there is uncertainty about the sales and profit contribution of the above products to this year. There are certain uncertainties and risks in product R & D progress, sample delivery testing, product introduction and market expansion.