Why can Nongfushanquan fire up?

Nongfushanquan is a bit sweet, this is the original advertising slogan of the brand of Nongfushanquan, 1998 this advertisement in the CCTV broadcast, immediately spread all over the north and south of the Yangtze River. Nongfushanquan this advertising slogan, seemingly focusing on the performance of the "sweet", the essence is to show the quality of its water, and "sweet" this memory symbol, so that users remember the Nongfushanquan at the same time, so that the "sweet" into their own label. The "sweet" symbol of memory, so that users remember the Nongfushanquan at the same time, so that "sweet" has become its own label.