LONGi donates solar modules for rooftop project at Vo Thi Sau High School in Vietnam By LONGi Solar Email LONGi Solar is pleased to announce that it has donated solar modules for a 20.2 kWp rooftop system at Vo Thi Sau High School in Ba Ria, Vung Tau Province, through its distribution partner in Vietnam, PowerTech Engineering and Trading Co., Ltd., who provided free installation support for the project. Estimated to have a cost of over 300 million VND, the project was initiated and commissioned by Ba Ria – Vung Tau Power Company (PC BR-VT). This is the second rooftop power project installed free of charge by PC BR-VT for schools in Con Dao district.