Brgy. Batino, Calamba City 1 May 2014 As part of the country’s Labor Day celebration this year, President Benigno S. Aquino III visited some of the electronics and semiconductor manufacturing companies in the province of Laguna. The President started his tour at Testech, Inc. in Brgy. Batino, Calamba City where he inspected the training and continue reading : Visit to Testech, Inc.