Reasons for Nanling Science and Technology's plunge on June 30th.

The global semiconductor market has declined, and investors' mood has also changed.

Global semiconductor market decline: The global semiconductor market is affected by many factors, such as trade friction and epidemic situation, and the market demand drops, which leads to stock price fluctuations of companies such as Nanling Technology.

Changes in investor sentiment: Investors' investment sentiment in Nanling Technology and other companies may be affected by many factors, including company news announcements and industry changes, which may lead to stock price fluctuations.