... CNC machining Weifang Rainbow Machinery Co.,Ltd was established in 1999,it is located in Weifang Economic Development Zone of Weifang,Shandong ... steel,heat-resistant steel,carbon steel,alloy steel,nonferrous alloys and other customized materials,using the world's advanced precision ... 90% of our products are exported abroad,mainly to North America,EU,Singapore,Japan,Australia,etc. 42CrMo Forging ...