THE CHINESE OPERA INSTITUTE

The essential tool for cross-border due diligence, compliance, and data cleansing. A one-stop solution for precise industry code mapping.

Multi-Standard Mapping: Bi-directional conversion across NAICS 2022, GB/T 4754-2017, NACE Rev. 2.1, and ISIC Rev.5.

Free Lookup: Instant online search for single-code conversions.

Enterprise Plans: Bulk matching, API access, and full database downloads.

[Try Code Conversion For Free →]

Unlock the truth behind Singapore business credit! Click this link to instantly purchase authoritative credit reports and make informed decisions with confidence!

• Business Directory Library
• United States Business Directory
• United Arab Emirates Business Directory
• China Business Directory
• Australia Business Directory
• Singapore Business Directory
• U.S. Business Directory