Final answer:
The architectural firm established in Hong Kong in 1988 that later became prominent in the Philippines with projects like the Philippine Plaza and others is known today as Palafox Associates.
Step-by-step explanation:
You are asking about an architectural firm that was established in Hong Kong (HK) in October 1988 by a group of young architects who had previously worked with top architectural firms in HK from 1976-1988. They opened a Philippine office in 1990 and have been involved with major projects such as the Philippine Plaza, ABS-CBN Complex, Kingswood Gardens, One and Two Lafayette Square, Salcedo Park, and the Pacific Plaza Towers. The firm was recognized as the firm of the year in 1997 by the Philippine Institute of Architects.
Based on the projects you've listed, which are known works of Palafox Associates, and considering the history and the recognition they have received in the Philippines, the current name of the firm today is a. Palafox Associates.