| HACH |
| HAMON |
| HANNA INSTRUMENTS |
| HAURATON |
| HEGLER FRANCE |
| HERLI |
| HERMES TECHNOLOGIE |
| HEWITECH GMBH |
| HIDRACINCA |
| HIDROSTAL FRANCE |
| HITEC |
| HUBER TECHNOLOGY |
| HUOT |
| HUWER GROUPE |
| HYDRAUSMART |
| HYDREAL SAS |
| HYDREKA |
| HYDREOS - FWT / VILLAGE INNOVATION |
| HYDROCONCEPT |
| HYDROTEC TP FRANCE |
