Cheap And Discounts MDK 55Amp DC 1600V/2000V Rectifier Photovoltaic DC Solar Anti-reverse Charging/Current Anti-Backflow Freewheeling Diode Module Wholesale. Buy Directly From Merchant Suneng Solar Official Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.