Shares of robotics-linked companies continued their downward slide in Hong Kong trading on Wednesday, with several notable names posting significant losses. As of the latest data, Lens Technology (06613) dropped 4.83% to HK$20.88, while Mech-Mind Robot (09615) fell 3.22% to HK$81.05. Sanhua (02050) slipped 3.15% to HK$23.4, and Dobot (02432) declined 2.24% to HK$20.08.

The selloff comes amid reports that Chinese regulators have quietly tightened the approval process for humanoid robot companies seeking initial public offerings (IPOs). According to foreign media reports cited by financial outlets, the China Securities Regulatory Commission (CSRC) has recently issued informal "window guidance" to select investment banks and institutional investors, indicating that listing applicants must now demonstrate a capacity to generate recurring revenue, show a trajectory toward narrowing losses, or have achieved genuine technological innovation before their IPO submissions will be considered for review.

Adding to the market jitters, Unitree Technology saw its shares close at 469.8 yuan on Wednesday, representing a decline of more than 57% from its intraday peak of 1,100 yuan on its first day of trading. The company's total market capitalization has now fallen to approximately 190 billion yuan.

Separately, industry chatter has intensified following remarks by Mech-Mind Robot founder and CEO Shao Tianlan, who took to social media on September 9 and 10 to criticize certain "assembly-style" embodied intelligence companies for fabricating revenue through related-party transactions. He specifically called out Galaxy General, a company that is currently advancing its own IPO process.