Table 6.
Comparison of heavy metals contents in domestic and imported pellets

(Unit: mg/kg)	As	Cd	Cr	Cu	Pb	Hg	Ni	Zn
Domestic	0	0~0.3	1~2	0.4~7	0~2	0	0.01~1	5~10
Imported	0~20	0~2	0~117	0~7	0~84.4	0~10	0~2	1~53
NIFOS 1st-grade	≦1.0	≦0.5	≦10	≦10	≦10	≦0.05	≦10	≦100
ISO A1 grade	≦1.0	≦0.5	≦10	≦10	≦10	≦0.1	≦10	≦100