Longi Solar Panel 580W Joburg, Pretoria, Cape Town, Durban & Across SA ✓ From R 1,999. Get samples of $ !US$ 900/Piece Company Info. LONGi new generation HPBC cell technology opens a new chapter in the mass production of high-efficiency cells and continues to lead the reform of the industry. The efficiency of LONGi HPBC cells exceeds 25. The efficiency of HPBC+. The LONGi LR5-72HTD-580M is a high-efficiency monocrystalline solar panel, part of the Hi-MO 6 Explorer series, offering superior performance for large-scale residential and commercial solar installations. 5% and power output up to 580W, it ensures optimal energy production. Check latest panels, reviews & get your quote from authorized distributor Sunpal. Production of Half-cut 144cells Longi solar panel Package for Longi Half-cut Solar Panel 31pcs solar panel per pallet 155pcs per 20ft container 620pcs per 40ft container Longi Solar Panel Projects 1. Limited Product Warranty-Repair or Replacement within 12 years Supplier assures that under the.