1. Brewing technology: Tsingtao Brewery 1903 adopts the most traditional brewing technology, while Tsingtao Classic adjusts the wort concentration in the brewing technology and technology to make the taste more mellow and rich.
2. Taste and flavor: Tsingtao Beer 1903 has richer taste and deeper flavor, and it will feel slightly bitter at first, which is due to the special flavor brought by hops. Qingdao classic is more mellow and slightly sweet.