How are zinc ingots classified?

(1) is based on different zinc content.

0# zinc ingot 99.995%. And 99.99% 1# zinc ingot.

(2) The standard used in the delivery of futures contracts: zinc ingots, which conform to the provisions of the national standard GB 470- 1997, and the zinc content is not less than ZN99.995%.

That is, 0# zinc ingot.

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