Description

The mall specializes in producing and selling high-purity experimental products for "scientific research institutes, universities and other" scientific research institutions and laboratories. For experiments, we should buy high-cost and high-purity products instead of low-cost and low-purity products. We should buy according to the actual use. Although the purity of industrial products looks the same. Low purity industrial products should be avoided from entering the laboratory, which will affect the accuracy of experimental results.

50g in this option is equivalent to 50g tellurium block. Other specifications in the option have the same meaning.