Average efficiency exceeds 22.19%, higher than ITRPV expectation NINGBO, China: Risen Energy Co., Ltd. has given a keynote speech focusing on the latest update involving the double-side-AlOx-passivated PERC cell in the 14th China Solar-grade-silicon and PV Conference (14th CSPV) in Xi’an, Shaanxi province, China. The conference is jointly organized by the Chinese Renewable Energy Society, […]