Double Impact

Double Impact is a 1991 American action film written and directed by Sheldon Lettich, and written, produced by and starring JeanClaude Van Damme in a dual role as Chad and Alex Wagner. The film was released in the United States on August 9, 1991. The film marked Van Dammes second collaboration with Bolo Yeung the first being Bloodsport in 1988

In the present day, Chad JeanClaude Van Damme and Frank are running a successful martial arts business in Los Angeles when Frank reveals a new business for the two of them in Hong Kong. Soon after arrival, they find Chads longlost twin brother Alex JeanClaude Van Damme and Frank explains their shared past. It is revealed that Alex is immersed in the Hong Kong crime world ruled by Zhang, and has a girlfriend who works for Griffiths company, Danielle Wilde Alonna Shaw. After escaping the Hong Kong Marine Police for trying to sell foreign cars with electronics inside, Chad mistaken for Alex is taken in by the Triads to discuss the incident. During the interrogation, Chad learns about a drug lab in Causeway Bay.Alex and Chad arrange to destroy the lab by planting C4 in the complex one night, but Chads clumsiness triggers a massive gunfight. The lab is destroyed, but Alex loses any respect for Chad. Later, Danielle and Alex talk on a ferry and discuss a meeting that will take place soon in a night club in Hong Kong, with Zhang and other bosses in attendance. Alex, Chad and Frank endure their third mission to take down Zhang using Cognac boxes with C4 encased in them. ........

Source: Wikipedia