Sungrow signs long-term framework agreement with Solarpack to supply inverters up to 400 MVA PR Newswire HEFEI, China and PAMPLONA, Spain, Sept. 23, 2019 HEFEI, China and PAMPLONA, Spain , Sept. 23, 2019 /PRNewswire/ -- Sungrow, the world's most bankable inverter brand, forged a framework agreement with the Spanish solar PV developer and independent power producer Solarpack for the provision of up to 400 MVA of 1500 Vdc central inverter solutions to solar power plants based in Spain and Chile ....