The solar panels we produce are monocrystalline kind from 0.1w to 230w. Most are tempered glass laminated with aluminum frames, waterproof junction box and cables.Our solar cells all from Suntech, the leading company of solar field in China.The cells we use is 16.5% efficienc so we can assure you the high quality.And we can produce at least 500Kw per month, so we can also assure you the in time delivery time.All product approved CE certification.