Our company, MediCrystal LLC, is based in the USA and we manufacture our mats in China. Our production facilities are registered with ISO, TUV, CE, and FDA. We import many parts from Korea and source high-quality natural amethyst stones from South America. We supervise all stages of production and packing and assign a unique serial number to each product.  Before shipping, all mats undergo stringent quality control to ensure they meet our high standards. We offer a fast and free warranty, a hassle-free trial, a 45-day return policy, and a lifetime trade-in policy to back our products.  Our story is simple. We were impressed with the healing power of precious stones and heat therapy, but the high cost of amethyst biomats made it difficult for many people to afford them. We started our business to make amethyst products more accessible to everyone.