?????????????????

??????????

????????

????5492-85

??????????????

??????????

????????

????5492-85

????????????????

???

????????

?

?????????????????

???

????????

?

????????????????????

0.4-0.6????/??.

0.40-0.55?/??.

?

??????????

80

100%

????5507-85

??????????????????????

≤5.0%

3.25%

????5009.3

??????????

≤5.0%

2.65%

????5009.4

??????????????????????

??????

????????

????

????????

???????????????

≤10ppm

???????

?????? (?????)

≤1.0ppm

????? (GB/T5009.11)

?????? (Pb)

≤1.0ppm

????? (GB5009.12)

????????

?????????

????? (GB/T5009.15)

????

≤0.1ppm

?????????

????? (GB/T5009.17)