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: Plastics and rubber products manufacturing for Pacific Rim [COPRIMZ326], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/COPRIMZ326/, October 7, 2015.