正海生物：股东Longwood Biotechnologies Inc.计划减持公司股份不超过360万股

Group 1 - The core point of the article is that Zhenghai Biological announced that its shareholder Longwood Biotechnologies Inc. plans to reduce its stake by up to 3.6 million shares, which represents 2% of the total share capital and 2.03% of the total share capital excluding shares in the repurchase account [1] Group 2 - The announcement was made on February 27, and the reduction will occur within three months after 15 trading days from the announcement date [1]