DNB DRYVENT INDIA PVT.LTD. SONAR AIROTECH PVT. LTD.

SONAR-DNB Group of Companies constitutes two companies, both the companies are located in KOLKATA, in the eastern part of INDIA named : Sonar Airotech Pvt. Limited DNB Dryvent India Pvt. Limited In addition to Plant Design, Manufacturing, Installation & Commissioning of new PM Hood & Air Systems, we are also in a position to : Conduct Site Surveys to improve plant performance. To take up Retrofit jobs involving Modernization/ Expansion / Rebuild of existing Hood & Air Systems. We have our own, Research & Development wing, Manufacturing Units, a wide network of ancillary units and skilled site fabrication & erection teams. We have hundreds of successful installations to our credit. Our Hood & Air Systems are tailor-made to suit any kind of requirement- starting from very simple systems for small machines to highly sophisticated systems for most modern high speed machines.