Our organization insists all along the quality policy of "product quality is base of business survival; purchaser gratification is the staring point and ending of an business; persistent improvement is eternal pursuit of staff" as well as the consistent purpose of "reputation 1st, purchaser first" for Antminer S9, Flex Atx Modular , Server Dual Power Supply , Server Psu To Atx Motherboard ,Flex Atx 500w . All prices depend upon the quantity of your respective order; the extra you purchase, the extra economical the rate is. We also offer fantastic OEM provider to numerous famous brands. The product will supply to all over the world, such as Europe, America, Australia,Finland, Guatemala,Amsterdam, United Arab Emirates.Our items are widely recognized and trusted by users and can meet continuously changing economic and social needs. We welcome new and old customers from all walks of life to contact us for future business relationships and mutual success!