Our corporation insists all along the quality policy of "product top quality is base of organization survival; purchaser pleasure will be the staring point and ending of an company; persistent improvement is eternal pursuit of staff" plus the consistent purpose of "reputation very first, purchaser first" for stainless steel gas sensor housing, Portable Multi Gas Detector , Sintered Plastic Porous Filter , Filter Disk ,Brewing Aeration Stone . should you have any query or wish to place an initial order please do not hesitate to contact us. The product will supply to all over the world, such as Europe, America, Australia,Swaziland , Leicester ,Sudan , UAE .Our tenet is "integrity first, quality best". Now we have confidence in providing you with excellent service and ideal merchandise. We sincerely hope we can establish win-win business cooperation with you in the future!