The
material of the carbon is AISI1008~AISI1018,
AISI1045, AISI1065~AISI1086, the products has
different grades of G5-G500.
According to CHINA GB308-2002 and USA
AFMBA1989, it's applied in all kinds of
exactitude Machine, light-duty Bearing,
Casters, Bicycle parts, Hardware, Toy and etc
.