Pacific Rim includes: China, Japan, Australia, Brunei, Indonesia, Macao, Malaysia, New Zealand, Papua New Guinea, Philippines and the Asian Newly Industrialized Countries. Asian Newly Industrialized Countries include: Hong Kong, Singapore, South Korea and Taiwan.
For more information, please see the Import/Export Price Indexes frequently asked questions site at http://www.bls.gov/mxp/ippfaq.htm.
Source: US. Bureau of Labor Statistics
Release: U.S. Import and Export Price Indexes
US. Bureau of Labor Statistics, Import Price Index: Resin, synthetic rubber, and artificial synthetic fibers and filaments for Pacific Rim [COPRIMZ3252], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/COPRIMZ3252/, September 4, 2015.