We now have the next payment approaches. You can inform our sales Manager which payment you favor and entire it. Once the customer support checks and confirms the payment is concluded. Give the proforma invoice. And We'll prepare to ship. copyright Payment Q：hola quiero comprar un Silenciador de soplador gen2 https://antminer-controll-boards29464.snack-blog.com/37595795/about-antminer-s21-control-board