Core Viewpoint - The company, Guangku Technology, indicated that its wavelength division multiplexers and other general optical fiber devices can be applied in the optical communication field, including quantum communication, but the revenue contribution from these products is relatively low, thus having a minor impact on the company's overall performance [1] Group 1 - The company's products include wavelength division multiplexers and general optical fiber devices [1] - These products are applicable in the optical communication sector, specifically in quantum communication [1] - The revenue contribution from these products is low, resulting in minimal impact on the company's operational performance [1]