Simtec Inc

Established in 1945, Great Lakes Castings Corp. is one of the leading suppliers of readily machinable gray iron castings in the United States. Based in Holland, Mich., the company specializes in gray iron castings for the heating and cooling, refrigeration, pump and valve industries. Its laboratory capabilities include metallurgical, chemical, physical and material code specifications. The company caters to construction, manufacturing, industrial and agricultural industries. Great Lakes Castings Corp. is an ISO/TS 16949:2002 certified company.

DMJ Casting Inc. has been a leader in jewelry casting for over 30 years, offering a commitment to unparalleled service, craftsmanship, and innovation. They take pride in serving clients of all sizes, delivering quality products that span from simple designs to complex creations in various metals, including their popular platinum and palladium options. Utilizing state-of-the-art technology and a highly skilled international team, DMJ Casting ensures precision and excellence from conception to final product. Their exceptional customer service emphasizes professional communication, making each client's experience memorable while maintaining a standard of quality that encourages loyalty among customers. Generated from the website

Kerkstra Precast produces precast and pre-stressed concrete products, including insulated sandwich wall panels, hollow-core floor planks, beams, columns, highway sound walls, median barriers, manholes and septic tanks, as well as custom specialty precast products for the construction industry. These products are used in many different applications, including industrial, commercial, retail, educational, office, institutional, recreational, and residential projects. Produced at two Michigan locations, in Jenison and Grandville, Kerkstra Precast s facilities offers state-of-the-art equipment in the industry. Larry Kerkstra, then the owner of Kerkstra Septic Tank, began Kerkstra Precast in 1975. Its location in Grandville opened in 1997 and operates on more than 30 acres. Kerkstra Precast maintains corporate headquarters in Jenison.