Ayyappa Infra Projects and Gaja Engineering-Keyem Infra JV technically shortlisted for implementation of Poonamalle UGSS in Tamil Nadu February 13, 2026 | Key Segments, Municipal Wastewater, Project Bidders, Project Updates, Wastewater Ayyappa Infra Projects Private Limited and the joint venture (JV) of Gaja Engineering Private Limited, Keyem Infra Projects Private … This content is restricted.