Table 7.
Number of companies classified by the contents of heavy metals included in their pellets

As (mg/kg dry)
	N.D	≦ 0.1	≦ 0.2	≦ 0.3	≦ 0.4	≦ 0.5	≦ 1.0	≦ 20
Domestic	6
Imported	13
Cd (mg/kg dry)
	N.D	≦ 0.1	≦ 0.2	≦ 0.3	≦ 0.4	≦ 0.5	≦ 1.0	≦ 2.0
Domestic	1	1	2	1
Imported	10	5	1	1	1			1
Cr (mg/kg dry)
	N.D	≦ 1	≦ 2	≦ 3	≦ 4	≦ 5	≦ 10	≦ 120
Domestic		4	2
Imported	8	7	1	1				1
Cu (mg/kg dry)
	N.D	≦ 1	≦ 2	≦ 3	≦ 4	≦ 5	≦ 7	≦ 10
Domestic		3	2				1
Imported	1		2	3	1	1	3
Pb (mg/kg dry)
	N.D	≦ 1	≦ 2	≦ 3	≦ 4	≦ 5	≦ 10	≦ 100
Domestic	1		5
Imported	3	3	2	1	4	1		4
Hg (mg/kg dry)
	N.D	≦ 0.01	≦ 0.03	≦ 0.05	≦ 0.1	≦ 0.5	≦ 1.0	≦ 10
Domestic	6
Imported	17							1
Ni (mg/kg dry)
	N.D	≦ 0.01	≦ 0.1	≦ 0.3	≦ 0.6	≦ 1	≦ 3	≦ 10
Domestic		1			2	3
Imported	2			2	1	6	1
Zn (mg/kg dry)
	N.D	≦ 1	≦ 3	≦ 5	≦ 7	≦ 10	≦ 16	≦ 100
Domestic				1	3	2
Imported		1	2	2	2	1	4	1