The Chinese exercises, centred on six locations around the island that China claims as its own, began on Thursday and were scheduled to last until midday on Sunday.
Pegatron, an iPhone assembler, and United Microelectronics Corp have run damage control following recent reports after US House Speaker Nancy Pelosi visited Taiwan, reflecting a tense cross-strait business environment.
The Philippines cannot take sides between the United States and China should tensions between the two superpowers further escalate, said National Security Adviser Clarita Carlos.
"Extra caution and a sense of responsibility is indispensable when it comes to Taiwan," Jing Quan, minister of China s embassy in Washington, D.C. said.