| INSULA LIMITED | Private company limited by shares | Dissolved |
| INSULA LUMEN LIMITED | | Live |
| INSULAR INDUSTRIAL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| INSULAR SHIPPING LINE LIMITED | Private company limited by shares | Live |
| INSULAR SYSTEMS, LIMITED | Private company limited by shares | Dissolved |
| INSULAR TRADING COMPANY (H.K.) LIMITED | Private company limited by shares | Dissolved |
| EASTERN INSULATING MATERIAL CO., LIMITED | Private company limited by shares | Live |
| SHENZHEN HONGLIDA INSULATING MATERIAL CO., LIMITED | Private company limited by shares | Dissolved |
| SUI ON INSULATING MATERIALS COMPANY LIMITED | Private company limited by shares | Live |
| ASIAN INSULATING PRODUCTS LIMITED | Private company limited by shares | Dissolved |
| EASTM THERMAL INSULATING MATERIALS COMPANY LIMITED | Private company limited by shares | Live |
| TAI PO INSULATION LIMITED | Private company limited by shares | Dissolved |
| HI TAK THERMAL & ACOUSTIC INSULATION ENGINEERING LIMITED | Private company limited by shares | Live |
| ASIA PACIFIC THERMAL & ACOUSTIC INSULATION LIMITED | Private company limited by shares | Dissolved |
| Advance Insulation Engineering & Trading Company Limited | | Live |
| AEROGEL INSULATION COATING COMPANY LIMITED | Private company limited by shares | Live |
| Bluetherm Cryogenic Insulation Limited | Private company limited by shares | Live |
| LUSEN INSULATION BUILDING MATERIAL CO., LIMITED | Private company limited by shares | Live |
| SANBY (HK-TAISHAN) INSULATION BUILDING MATERIALS LIMITED | Private company limited by shares | Live |
| SKT INSULATION CO., LIMITED | Private company limited by shares | Live |
| CHUANGQIANG INSULATION CO., LIMITED | Private company limited by shares | Live |
| China Earnestly Insulation Material Co., Limited | Private company limited by shares | Live |
| Langfang Ecoflex Insulation Trade Co., Limited | Private company limited by shares | Live |
| HITEX INSULATION (NINGBO) CO., LIMITED | Private company limited by shares | Live |
| Cool Tech Insulation Jiangsu Co., Limited | Private company limited by shares | Live |
| GREEN FOAM INSULATION MATERIAL CO., LIMITED | Private company limited by shares | Live |
| ZHEJIANG ASK NEW INSULATION MATERIAL CO., LIMITED | Private company limited by shares | Dissolved |
| ZHEJIANG MEG INSULATION MATERIAL CO., LIMITED | Private company limited by shares | Live |
| China Jianxia insulation materials Co., Limited | Private company limited by shares | Live |
| XIAMEN REKEWEI INSULATION MATERIALS CO., LIMITED | Private company limited by shares | Live |
| STMAT INSULATION CO., LIMITED | Private company limited by shares | Live |
| Electrical Insulation Consultant Limited | Private company limited by shares | Live |
| JTS THERMAL INSULATION CONSULTANTS LIMITED | Private company limited by shares | Live |
| EASTERN INSULATION LIMITED | Private company limited by shares | Dissolved |
| EASTM INSULATION LIMITED | Private company limited by shares | Live |
| ELECTRICAL INSULATION SYSTEM LIMITED | Private company limited by shares | Live |
| XIAMEN INSULATION ELECTRICAL TECHNOLOGY CO., LIMITED | | Live |
| PNT Noise Insulation Engineering Limited | Private company limited by shares | Live |
| JOEY INSULATION ENTERPRISE LIMITED | Private company limited by shares | Live |
| INSULATION & FIRE SOLUTIONS LIMITED | Private company limited by shares | Dissolved |
| FUXINHUA INSULATION MATERIAL LIMITED | Private company limited by shares | Live |
| HUANENG INSULATION GROUP LIMITED | Private company limited by shares | Live |
| GUANGZHOU CHEERFORE INSULATION COMPANY LIMITED | Private company limited by shares | Live |
| Haodesheng Insulation Material Limited | Private company limited by shares | Live |
| HEBEI WINNER INSULATION CO., LIMITED | Private company limited by shares | Live |
| TO HING AIR-CONDITION INSULATION COMPANY LIMITED | Private company limited by shares | Live |
| ZHEJIANG LIFU INSULATION MATERIALS (HK) LIMITED | Private company limited by shares | Dissolved |
| SNIT Insulation (HK) Co., Limited | Private company limited by shares | Live |
| BAOYANG THERMAL INSULATION (HK) CO., LIMITED | Private company limited by shares | Live |
| JIANYONG (H.K) ELECTRIC INSULATION WARE LIMITED | Private company limited by shares | Dissolved |
| JIANYONG (H.K.) ELECTRIC INSULATION WARE LIMITED | Private company limited by shares | Live |
| GLOBAL INSULATION COMPANY OF HONG KONG LIMITED | Private company limited by shares | Live |
| EVERTHERM INSULATION HONG KONG LIMITED | Private company limited by shares | Live |
| GENERAL INSULATION COMPANY OF HONG KONG LIMITED | Private company limited by shares | Live |
| K-FLEX (HONG KONG) INSULATION COMPANY LIMITED | Private company limited by shares | Live |
| HONG KONG INSULATION MATERIALS TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| NATURAL INSULATION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| WING ONN INSULATION (HONG KONG) LIMITED | Private company limited by shares | Live |
| JINGLIYUAN (HONGKONG) INSULATION MATERIAL CO., LIMITED | Private company limited by shares | Live |
| JIMMY THERMAL INSULATION MATERIALS (HONGKONG) LIMITED | Private company limited by shares | Live |
| ZHENSHEN INSULATION TECHNOLOGY HONGKONG CO., LIMITED | Private company limited by shares | Live |
| INSUL-PHEN INSULATION LIMITED | Private company limited by shares | Live |
| EUROFLEX INSULATION (INTERNATIONAL) LIMITED | Private company limited by shares | Dissolved |
| Shenzhen Jinwangxing Insulation Material Co., Limited | Private company limited by shares | Live |
| JUNENG INSULATION MATERIALS CO., LIMITED | Private company limited by shares | Live |
| KING TAI LAI ELECTRICIAN INSULATION MATERIALS CO., LIMITED | Private company limited by shares | Dissolved |
| GEL KING INSULATION PRODUCTS CO., LIMITED | Private company limited by shares | Live |
| NEW LIGHT ELECTRICAL INSULATION MATERIALS LIMITED | Private company limited by shares | Live |
| TOP INSULATION MATERIAL LIMITED | Private company limited by shares | Live |
| YABAO INSULATION MATERIAL CO., LIMITED | Private company limited by shares | Live |
| JIAXING INSULATION MATERIAL CO., LIMITED | Private company limited by shares | Dissolved |
| RICSSON PLASTIC INSULATION MATERIAL CO. LIMITED | Private company limited by shares | Dissolved |
| Hk Xingda Insulation Material Co., Limited | Private company limited by shares | Live |
| HUAMEI INSULATION MATERIALS CO., LIMITED | Private company limited by shares | Live |
| Insulation & Materials Solutions H. K. Co., Limited | Private company limited by shares | Live |
| NAN TAI INSULATION MATERIALS GROUP COMPANY LIMITED | Private company limited by shares | Live |
| LINKING INSULATION MATERIALS LIMITED | Private company limited by shares | Live |
| MEGATHERM INSULATION LIMITED | Private company limited by shares | Live |
| Shenzhen Neng En Da Plastic Insulation Co., Limited | Private company limited by shares | Live |
| Asia Pacific Insulation Company Limited | Private company limited by shares | Live |
| K-Flex Insulation & A/C Parts Limited | Private company limited by shares | Live |
| NATURAL INSULATION PRODUCTS INCORPORATION (NIPI) LIMITED | Private company limited by shares | Live |
| SHANGHAI TOP INSULATION CO., LIMITED | Private company limited by shares | Live |
| HVAC Insulation Supplies Co., Limited | Private company limited by shares | Live |
| SUNWACORK INSULATION MATERIALS SUPPLIES LIMITED | Private company limited by shares | Live |
| Sunwin Insulation Materials Supplies Limited | | Live |
| TDS THERMAL INSULATION SUPPLIES LIMITED | Private company limited by shares | Live |
| HI THERM INSULATION LIMITED | Private company limited by shares | Live |
| HI TAK THERMAL INSULATION LIMITED | Private company limited by shares | Live |
| CHINOX THERMAL INSULATION LIMITED | Private company limited by shares | Dissolved |
| HI THERMAL INSULATION SUPPLY LIMITED | Private company limited by shares | Live |
| Topland Insulation Limited | Private company limited by shares | Dissolved |
| UNIQUE INSULATION PRODUCTS LIMITED | Private company limited by shares | Live |
| UNITED INSULATION LIMITED | Private company limited by shares | Live |
| VITAR INSULATION MANUFACTURERS LIMITED | Private company limited by shares | Live |
| WANDA THERMAL INSULATION MATERIAL CO., LIMITED | Private company limited by shares | Live |
| Xionghua Plastic Insulation Limited | Private company limited by shares | Live |
| KAM Insulations Limited | Private company limited by shares | Dissolved |
| Unicorn Insulations Limited | Private company limited by shares | Live |
| H&B INSULATOR ACC COMPANY LIMITED | Private company limited by shares | Live |