KoSen Technology (603626.SH): The company's folding screen hinge assembly business has a single customer. The revenue generated by this business in the first half of the year accounted for only 2.10%.

Intelligence Financial APP News, Kosen Technology (603626.SH) announced that the company's stock had a deviation of 20% in the closing prices on September 16th and September 17th, 2025 for two consecutive trading days. According to the relevant regulations of the Shanghai Stock Exchange Trading Rules, this situation is considered abnormal stock trading volatility.