Model Engineering model 18v20w (a-grade monocrystalline silicon 1.5m wire thickened high-strength frame glass) Engineering model 18v30w (a-grade monocrystalline silicon 1.5m wire thickened high-strength frame glass) Engineering model 18v40w (a-grade monocrystalline silicon 1.5m wire thickened high-strength frame glass) Engineering model 18v50w (a-grade monocrystalline silicon 1.5m wire thickened high-strength frame glass) Engineering model 18v60w (a-grade monocrystalline silicon 1.5m wire thickened high-strength frame glass) Engineering model 18v80w (a-grade monocrystalline silicon 1.5m wire thickened high-strength frame glass) Engineering model 18v100w (a-grade monocrystalline silicon 1.5m wire thickened high-strength frame glass) Engineering model 18v120w (a-grade monocrystalline silicon 1.5m lines, thickened high-strength frame glass) Engineering model 18v150w (a-grade monocrystalline silicon 1.5m lines, thickened high-strength frame glass) Engineering model 18v200w (a-grade monocrystalline silicon 1.5m lines, thickened high-strength frame glass) Engineering model 36v200w (a-grade monocrystalline silicon 1.5m lines, thickened high-strength frame glass) Engineering model 18v250w (a-grade monocrystalline silicon 1.5m lines, thickened high-strength frame glass) Engineering model 36v250w (a-grade monocrystalline silicon 1.5m lines, thickened high-strength frame glass) Engineering model 18v300w (a-grade monocrystalline silicon 1.5m lines, thickened high-strength frame glass) Engineering model 36v300w (a-grade monocrystalline silicon 1.5m lines, thickened high-strength frame glass) Engineering model 42v585w (a-grade monocrystalline silicon 1.5m lines, thickened high-strength frame glass) Engineering model 41v445w (a-grade monocrystalline silicon 1.5m lines thickened high-strength frame glass) Engineering model 36v550w (a-grade monocrystalline silicon 1.5m lines, thickened high-strength frame glass)