Sanan Optoelectronics (SHA:600703) controlling shareholder Xiamen Sanan Electronics' 30 million shares put under a second round of judicial freezing, according to a Saturday filing with the Shanghai bourse.
Company shares fell 2% during the midday break on Monday.
The State Taxation Administration and Xiamen Torch Hi-Tech Industrial Development Zone Tax Bureau sought the judicial order for tax enforcement reasons, according to the filing.