CIG (06166) saw its shares rise nearly 17% during afternoon trading. At the time of writing, the stock had climbed 15.98% to HK$141.5, with a turnover of HK$516 million. The surge follows the company's recently disclosed first-quarter results. During the period, CIG reported revenue of RMB 1.287 billion, a year-on-year increase of 43.98%. Net profit attributable to shareholders reached RMB 118 million, soaring 276.44% compared to the same period last year. The strong performance was primarily driven by a significant expansion in the scale of its high-speed optical module business, as global data centers continue to show robust demand for 800G and 1.6T high-speed optical modules. Public information indicates that demand for these advanced modules remains strong worldwide. CIG is actively expanding production capacity, with its facilities in Jiashan and Malaysia gradually increasing output. The company is also advancing capacity construction at its production base in Mexico to meet market delivery demands. CIG anticipates that 800G optical modules will remain its primary shipment driver through 2026.