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 is not a prohibited word. Leadership is not the best, first. That is to say, the industry is at the leading level. A leader does not mean to be the only one, the first, the best, the best, and so on. The industry leader may be one enterprise or one hundred enterprises. Therefore, the front runner and the front runner do not violate the advertising law.