Randy's Calcium Good Wen Lan is a brand of Beijing Wen Lan Pharmaceutical Co., Ltd., whose main business is research and development, production and sales of calcium preparations specially developed for China's physique, and won the "Brand Leading Award" in 2020, and has been on the "Healthy China Brand List" for eight consecutive years. Yangshengtang Pharmaceutical Co., Ltd. was established in 1993, which is a large-scale medical and health care enterprise integrating scientific research, production and sales. Randy pays more attention to calcium, so Randy has better calcium.