Longtech: Longtech Attention Letter_ April 24, 2023_

Longtech: Announcement of Abnormal Volatility in Stock Trading

Ltd. on the verification of the investment in securities and derivatives of Shenzhen Lante Intelligent Control Co.

Ltd. on the self-evaluation report of internal control of Shenzhen Lante Intelligent Control Co.

Ltd. on the deposit and actual use of funds raised in 2022 by Shenzhen Lante Intelligent Control Co.

Longtech: Announcement of Supervisory Board Resolutions

Longtech: Notice on Holding the 2022 Annual General Meeting of Shareholders of the Company

Longtech: Announcement on the 2022 Profit Distribution and Plan for Converting Capital Reserve to Share Capital

Longtech: Independent Opinions of Independent Directors on Matters Related to the Fourth Meeting of the Third Board of Directors

Longtech: Announcement of Board Resolutions