... DIN, GB, BS, JIS, AISI, NF, etcProcessInvestment casting, Sand Casting,Weight0.01kg- 150kgToleranceCT 4-9 grade, and based on ... such as drawings, material,technology specification,surface treatment,quantity, special requirements and etc) Q 3.How about quality of ... can customized for you.Copper and Copper Alloys Casting ProblemsGroup II alloysGroup II alloys are those that have an intermediate freezing ...