Is it against the advertising law to strive to be a leader in an industry?

the front runner does not violate the advertising law, and it is not a prohibited word. Leading is not the best, first. It is to say that the industry is at the leading level. The leader doesn't mean to be the only one, the first, the best, the best, etc. The industry leader may be one enterprise or one hundred enterprises. Therefore, the front runners and leaders do not violate the advertising law.