Lianhe Credit Rating downgraded Hillstone Networks' (SHA:688030) convertible bonds worth 267.4 million yuan to A- from A after reviewing the company's operating conditions and the industry environment, according to a Shanghai bourse filing on Thursday.
The downgrade was posted in the rating firm's report published May 28.
The rating outlook of the six-year bond, which will mature March 21, 2028, remains negative.
The Chinese information technology company's shares dropped 4% at the close.