| Company Name | Type | Status |
|---|---|---|
| TES-SAN LIMITED | Private company limited by shares | Live |
| TESSAN INNOVATIONS GLOBAL LIMITED | Private company limited by shares | Live |
| HONG KONG TESSAN NEW ENERGY LIMITED | Live | |
| HONG KONG TESSAN INNOVATION LIMITED | Live | |
| HONGKONG TESSAN LIMITED | Private company limited by shares | Live |
| TESSAN POWER TECHNOLOGY LIMITED | Live | |
| TESSANET LIMITED | Private company limited by shares | Live |