A、≥99.65% B、≥99.75% C、≥99.85% D、≥99.95%
A、7~9.5% B、7.5~9.5% C、7.5~9.5% D、8~10%
A、0.1g/Nm35g/Nm3 B、0.1mg/Nm35g/Nm3 C、0.1g/Nm35mg/Nm3 D、0.1mg/Nm35mg/Nm3