26 July, 2021 Trina Solar recently conducted stringent dynamic mechanical load testing (DML) of its 210 Vertex 670W module, comparing with competitor’s single-glass 540W and dual-glass 535W modules in extreme environments based on the International Electrotechnical Commission (IEC) standards. The testing demonstrated that the 210 Vertex 670W module delivered better performance than the 540W/535W modules in terms of DML reliability.