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What is a CMX copper finger?
The CMX copper index is calculated by using the weighted average of CMX copper futures contracts.

Household grade CMX (copper cable) has only the grade of copper cable, without the classification of optical fiber, which is the lowest grade of UL. The flame on the household-grade cable will automatically go out after spreading for 5 meters, and there is no restriction of forced blowing, and there is no specification requirement for smoke and toxicity. Household-grade cables are generally used in individual households and should not be laid in bundles. The flame propagation mode of bundled cables is completely different from that of cables.