Tomonori Okuyama

Kosei St. Marys Corp. is an American company that specializes in the design and manufacture of aluminum castings. Kosei St. Marys is based in Saint Marys, OH. The private company's products are used by some of the largest auto manufacturers in the world. The company has a strong history and are proud of their capabilities in metallurgy. Kosei St. Marys is supported by Kosei Aluminum Co., Ltd., a world leader in metallurgy and a wide variety of metal products. This relationship allows them to utilize the best of American and Japanese technology and management skills to produce the highest quality products. The company's mission is to be the best aluminum wheel company in the world in terms of safety, quality, delivery, and customer satisfaction.