於1991年，共有 44,389 間公司在香港成立，其中 8,080 間至今仍然活躍。以下為該年成立公司一覽。
44,389 間公司
SINO RICH INTERNATIONAL LIMITED
SINO RICH INVESTMENT LIMITED
SINO RICH INVESTMENTS LIMITED
SINO RIGHT INVESTMENT LIMITED
SINO RIGHT TRADING LIMITED
SINO SCHEME LIMITED
SINO SHARP DEVELOPMENT LIMITED
SINO SHARP ENTERPRISES LIMITED
SINO SHARP INDUSTRIAL LIMITED
SINO SHARP INTERNATIONAL LIMITED
SINO SHINE FAR EAST LIMITED
SINO SIGHT LIMITED
SINO SKILL LIMITED
SINO SOURCE ENTERPRISES LIMITED
SINO SOURCES LIMITED
SINO SPARK ELECTRONIC LIMITED
SINO SPRING DEVELOPMENT LIMITED
SINO STRIDE INTERNATIONAL LIMITED
SINO STYLE DESIGN LIMITED
SINO SUPREME COMPANY LIMITED
SINO SUPREME INTERNATIONAL LIMITED
SINO SUPREME TRADING LIMITED
SINO SYSTEM INTERNATIONAL LIMITED
SINO TEAM LIMITED
SINO TECH INTERNATIONAL LIMITED
SINO TECHNIC COMPUTER LIMITED
SINO TIGER LIMITED
SINO TOWN DEVELOPMENT LIMITED
SINO TRADE INTERNATIONAL LIMITED
SINO TRIPOT GARMENT LIMITED
SINO TRUTH ENTERPRISES LIMITED
SINO TRUTH INDUSTRIAL LIMITED
SINO TRUTH INTERNATIONAL LIMITED
SINO TURBO ENTERPRISE LIMITED
SINO TURBO INDUSTRIES LIMITED
SINO UNION DEVELOPMENT LIMITED
SINO UNION ENTERPRISES LIMITED
SINO UNITED MANAGEMENT LIMITED
SINO UNITED TECHNOLOGY LIMITED
SINO UNIVERSE LIMITED
SINO VAST LIMITED
SINO VICTORY LIMITED
SINO VISION-TECH CONSULTANT & SUPPLIES LIMITED
SINO WATCH LIMITED
SINO WAY LIMITED
SINO WEALTH DEVELOPMENT LIMITED
SINO WEALTH INVESTMENT LIMITED
SINO WIN LIMITED
SINO WISE LIMITED
SINO WORLD ENTERPRISES LIMITED