Zhengzhou Sebon Heavy Machinery Co.,LTD. is a supplier which mainly engaged in the producting and processing of large precision casting.with advanced sodium silicate,silicon sol solution and Sand mold casting process,being able to produce precision of alloy steel,carbon steel,stainless steel and manganese steel material.we can do according to customer's drawings and requirements .if you need to consult or order any kind of Auto parts precision castings,please contact Sebon@sebonchina.com.