TRN HOLDING has a strong structure with its companies in various sectors.

In 2019, it was decided to combine the Holding and establish a corporate structure with the experience gained in the field of operating facility management since 1991 and the savings of commercial activities.

BUBBLE PLUS in facility management,
NETWORKSER in Energy, Electric, Electronic and Telecom services,
DE WITTE PRODUCTS in industrial product development,
TRN HOLDING continues its activities.