When sourcing Red Tea, price is dictated by Grade (SFTGFOP to Dust), Origin (e.g., Fujian Lapsang Souchong, Yunnan Dianhong, or Keemun), and Harvest Season. For premium B2B orders, prioritize First Flush or Spring Picked teas which command higher prices but offer superior aroma. Ensure the tea leaves are uniform in size, tightly twisted, and free of excessive stalks. High-quality Red Tea should have a bright, reddish-golden liquor with a distinct 'honey' or 'floral' aftertaste, rather than a flat or overly astringent profile.