 NANPING, China, Sept. 10, 2021 PRNewswire -- Happiness Biotech Group Limited the Company or Nasdaq: HAPP, an innovative China-based nutraceutical and dietary supplements producer and e-commerce services provider, today announced one of its nutraceutical products - Lucidum Tablets, have been launched for sale on the DouYin Mall, a virtual mall built within a Douyin mini-program. 