China high speed railway technology announced a significant activity notice, after the company's self-inspection and written verification with the controlling shareholder and actual controller, no need to correct or supplement previously disclosed information was found; no recent public media reports were discovered that may or have substantially impacted the company's stocks trading price with undisclosed significant information; the company's production and operation situation is normal and orderly, and there have been no major changes in the recent internal and external operation environment; there are no significant matters that the company's controlling shareholder and actual controller should disclose but have not, or are in the planning stage; during the abnormal fluctuations in the company's stocks, the controlling shareholder and actual controller did not engage in buying or selling the company's stocks.