[Hualan Bio: first quarter net profit 352 million yuan up 50.37% over the same period last year] Hualan Biology announced that its operating income in the first quarter of 2023 was 881 million yuan, an increase of 37.46% over the same period last year, and net profit was 352 million yuan, an increase of 50.37% over the same period last year. The increase in revenue was mainly due to the increase in sales of blood products and vaccine products.