COR®BON/Glaser® products, has been an American family-owned and operated corporation for over 30 years. The CorBon company uses only the highest quality components and put their products through rigorous, daily testing to insure that they bring you the safest products available. The CorBon facility has the most modern manufacturing and pressure-testing equipment in the industry. CorBon is proud to put "Made in USA" on all of their boxes, and they stand behind their products 100%. If you are dissatisfied with any of CorBon products for any reason, they will replace your product or refund your money.