Tianhai Electronics said its shares were flagged for abnormal trading volatility after the cumulative deviation in closing-price gains exceeded 20% over two consecutive trading days, according to 36Kr. The company said it signed a cooperation agreement with Shanghai Tashi Zhihang Technology Co., Ltd., a robotics company, on June 26, 2026, but the partnership has not had a substantive impact on its core business so far and is unlikely to contribute meaningfully to operating results in the short term. Tianhai added that the implementation progress and expected returns remain highly uncertain.