Group 1 - The core viewpoint of the report is that Guojin Securities has given a "buy" rating to Wavelength Optoelectronics (301421.SZ) with a latest price of 83 yuan [2] - The reasons for the rating include the expansion of the company's product layout in the precision optics sector, which is seeing growth across multiple downstream applications [2] - Additionally, there is a steady increase in customer orders in the laser and infrared fields, which is expected to drive the company's performance growth [2]