Siam MTK Co., Ltd. is a joint venture between Tokyo Slate Co., Ltd., which manufactures polished steel bars and precision processed parts, and Okaya Steel Machine Co., Ltd., a general trading company that handles production materials, and manufactures polished steel bars and precision processed parts. Located in Siam Eastern Industrial Park in Rayong Province, Eastern Thailand, we aim to create products that satisfy customers with the themes of creating high value-added products and challenging the ultimate products.