DL-6CYMJ-30 Electric Black Gold Stone Matcha Grinder: grinds to ≤15μm, capacity ~50g/h, 0.55KW. Ideal for premium, small-batch fine matcha.
The DQM-150 features a robust 110L inner and outer 304 stainless steel tank powered by an 11kw pure copper core reduction motor. The machine employs an automated feeding system with a 60L large-capacity hopper, transferring raw materials via a flexible screw conveyor driven by a speed-adjustable motor (0-300r/min).
The Matcha ball mill is designed for post-drying grinding of agricultural products (e.g., ground tea, Chinese medicinal materials) with advantages of low-temperature grinding (15-25℃) to retain raw material color and aroma, fine fineness (500-1000 meshes), PLC-controlled easy operation, and durable structure.
This smart electric stone mill seamlessly combines traditional low-temperature grinding with modern automated features to effortlessly produce ultra-fine, premium commercial matcha.
The DL-6CRT-40 Tea Rolling Machine is engineered for efficient and high-quality tea processing, with a generous capacity of 11 kg per batch.
The DL-6CYL-800 automatic tea cake pressing machine is applicable for pressing ball type tea, round tea cakes and square tea cakes. Its production capacity is 800-1000 pieces per hour. The sizes of tea cakes that this machine can produce are as follows: square tea cakes (25-40 mm), round tea cakes (25-45 mm), and ball type tea (27-35 mm).
Oolong Tea Rolling Machine specializes in tea rolling and shaping. With precise pressure control, it releases tea juice, enhances aroma, ensures stable quality, and suits green tea, oolong tea, etc.—a top choice for tea enterprises.
DL-CRQ-20Z CTC black tea HRS Gyrovane rotorvane machine mainly used for processing CTC black tea.
Introducing our premium black gold stone matcha mill grinder, designed for finer grinding, lower milling temperature, and live matcha powder demonstrations in cafes and tea shops.
Discover our newly developed granite matcha stone mill grinder, designed for low-temperature milling to preserve matcha’s vivid green color, aroma, and freshness.
Meet us at the 8th China International Tea Expo 2026 in Hangzhou. We showcase continuous 2500 mesh ball mill line, stainless steel ball mill, bluestone stone mill, black stone mill for premium matcha and tea powder production. Low-temperature, high-fineness, food-grade quality.
Discover the complete 12-step automated tencha processing line. Learn how Quanzhou Deli Agroforestrial Machinery engineers premium equipment for steaming, baking, and stem separation to produce top-tier matcha raw materials.
For tea farmers, the black tea processing sometimes has a bitter and astringent taste, which reduces the quality of black tea and reduces sales. Black tea is fully fermented tea. If some black teas are found to have a bitter taste, then we must first know what substances cause the bitterness of tea.
Astringency: The main component is polyphenols.
Bitterness: The main components are caffeine, anthocyanin and tea saponin.
Based on this, we judged that the bitter taste of black tea is because there are too many polyphenols and caffeine in the tea soup. In fact, the content of polyphenols in black tea is relatively low in the six major tea categories. The main reason is that with the increase of fermentation degree, the content of tea polyphenols will decrease. When black tea is fermented, tea polyphenols are enzymatically oxidized into theaflavins and thearubigins, and the content of tea polyphenols will eventually decrease by more than 90%. Therefore, under normal circumstances, the bitterness of black tea is very low.
I tried to brew it for a while. If the soup is out for more than 30 seconds, it does feel bitter and sour. Obviously, this is one reason, that is, the problem caused by the wrong method of brewing the tea-the water temperature is too high and the brewing time is too long, which will lead to bitterness. degree increase.
Now that we know the origin of the bitterness, is there any other situation? Studies have shown that the production process of black tea and the material of the tea will have an impact.
