Our intention is usually to satisfy our buyers by offering golden provider, great rate and good quality for Advanced Oxygenation for Hydroponics, Dew Point Measuring Device , Waterproof Humidity Sensor , Metallic Filter ,Carbonation Lid . All prices depend upon the quantity of your order; the more you order, the more economical the price is. We also offer good OEM service to many famous brands. The product will supply to all over the world, such as Europe, America, Australia,Finland , Congo ,France , Rotterdam .We warmly welcome domestic and overseas customers to visit our company and have business talk. Our company always insists on the principle of "good quality, reasonable price, the first-class service". We have been willing to build long-term, friendly and mutually beneficial cooperation with you.