DSM are proud manufacturers of high quality Masonry Products.. Breeze Blocks, Retainer blocks, Hollow Blocks, Cinder Blocks, SplitFace Bricks. At DSM, We understand the demands and challenges of running a building site, and have the products and experience to ensure your project is a success, no matter the size. Getting the correct products on time all the time is what you need and what we will deliver. We take pride in offering our customers an affordable high quality product every time at competitive prices! ! !