We begin to produce our machinery parts by OEM in 2006, and so far we have produced various types of machinery parts for industry, such as Machinery for construction industry with a big volume. All of the parts are made by high quality alloy steel and heat treatment process.  This makes steel investment castings the hardest metal utilized in the lost wax process. Through secondary annealing operations steel investment castings can also become one of the softest metals investment cast.