Complex sentence: In 2004, Moon held an opening ceremony of the largest helicopter manufacturer in Asia, with 500 VIPs participating, namely Washington Times Aviation; the company produces Sikorsky helicopters on sub-contract basis.
Split into simpler sentences: In 2004, Moon held an opening ceremony of the largest helicopter manufacturer in Asia, with 500 VIPs participating. Called Washington Times Aviation, the company produces Sikorsky helicopters on a sub-contract basis.