TheNanjing-based company did not reveal the terms of the deal, which covers all ofCSun's three production sites in Nanjing, Shanghai and Istanbul. It will adoptZep Solar’s patented Zep Groove for the frames of its monocrystalline andpolycrystalline modules.

California-basedZep Solar’s system has steadily gained favour with PV manufacturers.

CanadianSolar was the first big panel producer to start using Zep kit, but it has sincebeen followed by JA Solar, Trina, Yingli and ReneSola.

CSun