November 29, 2017 QE Xplate® installation at grate chain coal boiler in Nam Dinh province, Vietnam November 29th, 2017 at 3:30 p.m. Hoang Dung textile company in Nam Dinh province, Vietnam has confirmed the test results of Xplate® technology able to improve the combustion efficiency with coal saving of 5.32%. No negative effects were found to the boiler operations.