Membrane filtration and concentration technology offers an efficient low-temperature purification method for tea deep processing. Combining microfiltration, ultrafiltration and reverse osmosis, it removes suspended solids, pectin and colloids from crude tea liquor at room temperature, avoiding thermal damage to tea polyphenols, theanine and natural aroma. This modular system supports lab, pilot and commercial scale production for tea juice clarification and concentration. It features low energy consumption, easy CIP cleaning and water recycling, ideal for ready-to-drink tea, instant tea powder and tea polyphenol raw material production.