[*ST Wingtech: The company's main credit rating has been downgraded to "BBB-"] On September 16th, *ST Wingtech announced that the rating agency China Chengxin has recently implemented irregular tracking ratings in accordance with the relevant management systems for tracking ratings, and issued " China Chengxin International's Announcement on Downgrading the Credit Rating of Wingtech Technology Co., Ltd.'s Entity and Related Debt", the rating results are as follows: the company's principal credit rating is adjusted to "BBB-", and the rating outlook is negative; the credit rating of "Wingtech Convertible Bonds" is also adjusted to "BBB-". Before the adjustment, the main credit rating of Wingtech's convertible bonds was "BBB+" and the rating outlook was "negative"; the debt credit rating was "BBB+".