I have been working with SUPERMIX for 3 years now, and I am glad I chose them from the beginning. Their products are of very high quality, and my retailers have never complained about their products. Besides wholesale all refractory, they also have other good quality products, such as related industrial machinery, project design and reconstruction, which I ship in the same container some time. The industrial machinery, in particular, sell very well with all refractory. So if possible, I suggest you try their other products as well.