| Precision Pest Control Services Limited | Private company limited by shares | Live |
| Wing Kai Pest Control Services Limited | Private company limited by shares | Live |
| QUALITY CONTROL PRODUCT SERVICES LIMITED | Private company limited by shares | Dissolved |
| PRUDENT PEST CONTROL SERVICES CO LIMITED | Private company limited by shares | Dissolved |
| QUALITY CONTROL SERVICES LIMITED | Private company limited by shares | Live |
| British Quality Assurance Quality Control Services Limited | Private company limited by shares | Dissolved |
| QUALITY CONTROL SERVICES (HOLDINGS) LIMITED | Private company limited by shares | Live |
| PACIFIC QUALITY CONTROL SERVICES LIMITED | Private company limited by shares | Dissolved |
| Regent Pest Control Services Limited | Private company limited by shares | Live |
| SANWA PEST CONTROL SERVICES LIMITED | Private company limited by shares | Live |
| New Sanwa Pest Control Services Limited | | Live |
| CONTROL AND SOURCING SERVICES LIMITED | Private company limited by shares | Live |
| STATIC CONTROL SERVICES (ASIA) LIMITED | Private company limited by shares | Dissolved |
| SWAN PEST CONTROL SERVICES LIMITED | Private company limited by shares | Live |
| TERMITE CONTROL SERVICES LIMITED | Private company limited by shares | Live |
| ULTRA PEST CONTROL SERVICES LIMITED | Private company limited by shares | Dissolved |
| SEVERIN QUALITY CONTROL LIMITED | Private company limited by shares | Dissolved |
| SHANG HAI PEOPLE INDUSTRY CONTROL LIMITED | Private company limited by shares | Dissolved |
| SHANGHAI PEOPLE CONTROL ELECTRIC CO., LIMITED | Private company limited by shares | Live |
| SHANGHAI PEOPLE ELECTRIC CONTROL LIMITED | Private company limited by shares | Live |
| SHANGHAI QUALITY CONTROL CHN LIMITED | Private company limited by shares | Live |
| GERMANY HLN ELECTRIC CONTROL SHARE LIMITED | Private company limited by shares | Live |
| SHARP CONTROL LIMITED | Private company limited by shares | Live |
| GERMANY SHENGXIN NUMERICAL CONTROL TECHNOLOGY (HONGKONG) LIMITED | Private company limited by shares | Live |
| SHENYANG NUMERICAL CONTROL LATHE LIMITED | Private company limited by shares | Live |
| SHIHE CONTROL ENGINEERING CO., LIMITED | Private company limited by shares | Live |
| SHING HING CONTROL SYSTEM COMPANY LIMITED | Private company limited by shares | Live |
| BSC Barkemeyer Shipmotion Control Limited | Private company limited by shares | Dissolved |
| HONG KONG SHOUXIN CONTROL EQUIPMENT CO., LIMITED | Private company limited by shares | Dissolved |
| Sihu Flow Control (H.K.) Company Limited | Private company limited by shares | Live |
| Sincere Hygiene & Pest Control Co. Limited | Private company limited by shares | Live |
| Lai Sing Pest Control Limited | Private company limited by shares | Live |
| SINO CONTROL LIMITED | Private company limited by shares | Dissolved |
| CONTROL SMART LIMITED | Private company limited by shares | Dissolved |
| SMART CONTROL LIMITED | Private company limited by shares | Live |
| SMART CONTROL LIMITED | Private company limited by shares | Live |
| Longtech Smart Control Limited | | Live |
| SMARTECH CONTROL SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| HK SMARTEST MEASUREMENT & CONTROL DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UK JIANGTU SMOKE CONTROL TECHNOLOGY INTERNATIONAL PUBLIC LIMITED | Private company limited by shares | Live |
| AMERICAN SNNA PROCESS CONTROL GROUP (HK) CORP. LIMITED | Private company limited by shares | Dissolved |
| FLUID-STRUCTURE-SOUND INTERACTIONS AND CONTROL SOCIETY LIMITED -THE- | Company limited by guarantee | Live |
| SOLOMON PEST CONTROL LIMITED | Private company limited by shares | Live |
| ECO CONTROL AND SOLUTION LIMITED | Private company limited by shares | Live |
| KX Control Solutions Limited | Private company limited by shares | Live |
| HK Control Solutions Limited | Private company limited by shares | Live |
| SONOM FLUID CONTROL GROUP LIMITED | Private company limited by shares | Dissolved |
| SOURCE CONTROL (H.K.) CO., LIMITED | Private company limited by shares | Live |
| STATE SOURCE POWER & CONTROL INT'L LIMITED | Private company limited by shares | Live |
| Source Control International Trading Co., Limited | | Live |
| SOURCING & QUALITY CONTROL COMPANY LIMITED | Private company limited by shares | Live |
| LIQUOR CONTROL SPECIALISTS OF ASIA COMPANY LIMITED | Private company limited by shares | Live |
| OVERSEAS QUALITY CONTROL SPECIALISTS LIMITED | Private company limited by shares | Live |
| SPEED CONTROL LIMITED | Private company limited by shares | Dissolved |
| Control Spray System Limited | Private company limited by shares | Live |
| STAEFA CONTROL LIMITED | Private company limited by shares | Dissolved |
| Stanley Pest Control Limited | Private company limited by shares | Live |
| ASIA STAR CONTROL SYSTEM LIMITED | Private company limited by shares | Dissolved |
| NORTH STAR TECHNOLOGY CONTROL LIMITED | Private company limited by shares | Live |
| STARPO MEASUREMENT & CONTROL TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| STATE CONTROL CO., LIMITED | Private company limited by shares | Live |
| STATE CONTROL MEDICAL LIMITED | | Live |
| MCP STATIC CONTROL LIMITED | Private company limited by shares | Dissolved |
| BOSCH STATIC CONTROL LIMITED | Private company limited by shares | Live |
| STATIC CONTROL SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| STEP CONTROL LIMITED | Private company limited by shares | Dissolved |
| Stratton Pest Control Limited | Private company limited by shares | Live |
| SUITE CONTROL LIMITED | Private company limited by shares | Live |
| SUMMIT STATIC CONTROL LIMITED | Private company limited by shares | Live |
| SunShine Pest Control Limited | Private company limited by shares | Live |
| SUNZEST CONTROL LIMITED | Private company limited by shares | Live |
| SUPER CONTROL LIMITED | Private company limited by shares | Dissolved |
| FLUID CONTROL SUPPLIES (FAR EAST) LIMITED | Private company limited by shares | Dissolved |
| Instyle Supply and Control Limited | Private company limited by shares | Live |
| SUPREME CONTROL LIMITED | Private company limited by shares | Live |
| SUPREME PEST CONTROL LIMITED | Private company limited by shares | Live |
| SURE WATER QUALITY CONTROL TECHNOLOGY (CHINA) INC. LIMITED | Private company limited by shares | Dissolved |
| TKB CONTROL SYSTEM LIMITED | Private company limited by shares | Live |
| P. T. CONTROL SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| ASIA CONTROL SYSTEMS LIMITED | Private company limited by shares | Live |
| INNOVISION CONTROL SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| HK Taifu International Trade Sand Control Efficient Agriculture Co., Limited | Private company limited by shares | Live |
| TAIGE (TAIWAN) MEASURE AND CONTROL HOLDING LIMITED | Private company limited by shares | Live |
| TAIWAN DEGAO NUMERICAL CONTROL MECHANICAL LIMITED | Private company limited by shares | Live |
| TAIWAN RIGAO NUMERICAL CONTROL MECHANICAL LIMITED | Private company limited by shares | Dissolved |
| TAIWAN NUMERICAL CONTROL TOOL LIMITED | Private company limited by shares | Live |
| TAIWAN SHANTE NUMERICAL CONTROL TOOL LIMITED | Private company limited by shares | Live |
| TEAM CONTROL LIMITED | Private company limited by shares | Live |
| CONTROL TECH COMPANY LIMITED | Private company limited by shares | Live |
| GS TECH (CONTROL) COMPANY LIMITED | Private company limited by shares | Live |
| TECH CONTROL (ASIA) LIMITED | Private company limited by shares | Dissolved |
| Dingxin Control Tech Limited | | Live |
| LEYU INTELLIGENT CONTROL TECH. CO., LIMITED | Private company limited by shares | Live |
| YDA FLUID INTELLIGENT CONTROL TECH LIMITED | Private company limited by shares | Live |
| Tianfu Intelligent Control Tech Co., Limited | Private company limited by shares | Live |
| DATA CONTROL TECHNITIC (HK) CO., LIMITED | Private company limited by shares | Live |
| Nanhai Power Control Technologies Co., Limited | Private company limited by shares | Live |
| MR. CONTROL TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Dissolved |
| CONTROL TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| MY CONTROL TECHNOLOGY LIMITED | Private company limited by shares | Live |