Strict advanced testing and quality control are essential to each piece of product to assure it is up to standard to our customers.

Royal advanced design concept and advantageous technology achieve high quality products.Royal Service set up a factory for manufacture in China.Royal Service is capable of making components of VAV products in China.Key components are imported.Instant assistance,favorable service,excellent quality and best price to customers are the target for Royal Service to make great efforts on it.Custom Engingeered boxes from comcept to design,and then design sample,and testing,and then to manufacturing to meet customers demand.

After VAV box terminal unit and therma-fuser VAV modules have been promoted in China market.Royal Service takes advantage of it’s technology skills,We have been successful to develop a new VAV product,Fan power terminal unit.Its technology is lead in the world,features & performance are according to AMCA,UL standards,and attain RS VAV trademark.