[special message: subsidiary 400G Silicon Optical Module is in the sample stage] the special message on the interactive platform said that the 400G silicon optical module of the company's holding subsidiary Sichuan Huatuo is in the sample stage. The guarantee announced by the company on May 19 is the guarantee provided by the company's holding subsidiary Sichuan Huatuo for its wholly-owned subsidiary Hualing Photon to apply for credit from the bank for Hualing Photon to purchase fixed assets and supplement production and operation funds. The normal production and operation of the company will not be affected.