State-of-the-Art Manufacturing Plant in Melvindale, MI CONTACT US For over 60 years we have been an innovative manufacturer of metallic particles. Our unique proprietary manufacturing techniques produce a broad spectrum of products for multiple industries and environmental applications. VIEW PRODUCTS Winoa, through its Peerless brand of products is one of the few USA manufacturers to succeed in producing Bainite Abrasive that meets SAE J2175 specifications for Low Carbon Steel Shot. VIEW PRODUCTS Cast Steel Abrasives manufactured to meet SAE J2175, J444, and J1993 Specifications for Steel Shot and Steel Grit