As a way to ideal meet up with client's desires, all of our operations are strictly performed in line with our motto "High Top quality, Competitive Cost, Fast Service" for Porous Metal Essential Oil Necklace Diffuser, Sintered Metal Filter Cartridge , Accurate Humidity Sensor , Sintered Bronze Filter ,Waterproof Temperature Humidity Sensor . 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,Ecuador , Johannesburg ,Miami , New York .Products have been exported to Asia, Mid-east,European and Germany market. Our company has constantly been able to update the products performance and safety to meet the markets and strive to be top A on stable quality and sincere service. If you have the honor to do business with our company. we will definitely do our very best to support your business in China.