... , Esco, Komatsu, Hitachi, with over 700 varieties of categories, accounting for 75% of the total volume to the company. The foundry ... is equipped with the most advanced testing instruments for chemistry, mechanicals and heat treatment to guarantee the required ... , Esco, Komatsu, Hitachi, with over 700 varieties of categories, accounting for 75% of the total volume to the company. The foundry ...