Every single member from our large efficiency revenue team values customers' wants and company communication for Stainless Steel 316L Diffusion Stone, Chlorine Gas Sensor , Micro Co2 Sensor , Porous Media Filter ,Metallic Filter . Please feel free to contact us at any time. We will reply you when we receive your inquiries. Please note that samples are available before we start our business. The product will supply to all over the world, such as Europe, America, Australia,Nairobi , Portugal ,Cannes , Slovakia .Upon today, we've customers from all over the world, including USA, Russia, Spain, Italy, Singapore, Malaysia, Thailand, Poland, Iran and Iraq. The mission of our company is to provide the highest quality products with best price. We've been looking forward to doing business with you.