action of unfair competition的用法和样例：
- No security company shall solicit business of underwriting by means of unfair competition.
- The penalty for crimes of unfair competition ranges from 3 months to 1 year of detention time or a fine.
- Any act of competition contrary to honest practices in industrial or commercial matters constitutes an act of unfair competition.
- Securities firms may not solicit securities underwriting business by means of unfair competition.