Exen’s SMC odor control cover system is used in distribution boxes, sedimentation tanks, reaction tanks, digestion tanks, and thickeners of sewage and wastewater treatment plants for the prevention of malodor diffusion. It is made of the SMC (Sheet Molding Compounds) panel and aluminum alloy frames. The standardized SMC panel features excellent durability because of its resistance to change or distortion and physical shocks. It can be painted later, so colors can be freely chosen. Also, separate graphics can be added. As such, it ensures not only strength, but also a pleasing appearance.