Grandblue Environment Co.Ltd(600323) announced that Nanhai holdings, the parent company of the controlling shareholder, increased its holdings of 1 Tecon Biology Co.Ltd(002100) shares of the company on April 11, accounting for 0.12% of the total share capital of the company. Nanhai holdings plans to continue to increase its holdings of no less than 6 million shares and no more than 10 million shares, including the increased holdings of 1 Tecon Biology Co.Ltd(002100) shares this time.