How is the company positioned in the DCI amplifier industry chain? Tiantong Co., Ltd. responds.

An investor asked Tiantong Co., Ltd.: As a core upstream material supplier in the DCI amplifier industry chain, among the high-frequency low-loss soft magnetic materials, lithium niobate crystal materials, sapphire materials, and other products currently provided by the company for DCI amplifiers, which category has the largest shipment volume and the highest revenue proportion? Could you provide a detailed introduction to the company's layout in the DCI amplifier industry chain? On October 9, the company responded that the thin-film lithium niobate produced by the company has the characteristics of large bandwidth, low loss, and low power consumption, and can be applied to DCI coherent optical module products.