Complex sentence: The U.S. investigations revealed that many of these components were manufactured by the Scomi Precision Engineering facility in Malaysia and were produced under technical guidance of Dr. A.Q. Khan, and various nationals from the United Kingdom, Germany, and Switzerland.
Split into simpler sentences: The U.S. investigations revealed that many of these components were manufactured by the Scomi Precision Engineering facility in Malaysia. And, it was produced under technical guidance of dr. A.Q. Khan, and various nationals from United Kingdom, Germany, and Switzerland.