The mold is a brick-making core and direct impact on the quality of brick products. We factory produce the mold through a rigorous professional quality testing, and after the precision machining and heat treatment process several times, so that makes the mould surface hardness greatly improve, mold surface hardness is controlled by more than 60 degrees Rockwell advanced welding and heat treatment process, the mold is not easy to crack under the premise of ensuring the hardness.