Castech Inc. stated in a specific survey that some optical components produced by the company can be used in the field of optical communication, providing customers with optical components such as prisms, lenses, mirrors, and gratings needed for manufacturing optical devices and optical modules. Currently, the proportion of business in communication optics is still relatively small. The construction project of Phase II Building D is expected to take two years, and the progress is currently smooth, with the pile foundation work completed. Upon completion, the factory area will increase by nearly 0.04 million square meters. The construction of the factory is based on the company's medium- and long-term development needs, and in the future, production lines will be gradually built according to the market order situation of various products, flexibly matching the corresponding production capacity to meet the company's development needs.