Bilberry is rich in anthocyanins. More than 15 different anthocyanins were found in bilberry. Anthocyanins help maintain capillary integrity and stabilize collagen. Anthocyanins are also powerful antioxidants. Numerous clinical studies have shown that bilberry is very effective in treating circulatory discomfort, varicose veins and other venous and arterial discomforts. The macroporous adsorbent resin (Bilberry anthocyanin extraction special resin) provided by Suzhou Bojie Resin Technology Co., Ltd. can effectively extract anthocyanins, has large adsorption capacity, fast adsorption rate, strong selectivity, simple process and strong operability. Low organic residue, no secondary pollution to the environment, long service life, easy regeneration, economical and practical.