August 17th SMM basic metal spot trading day review

SMM August 17th: Copper: Today, the copper opened at 6534.5 US dollars / ton, a small wave of copper at the beginning of the plate rose, then quickly rushed to 6,580 US dollars / ton and then fell back under pressure, around 6546 US dollars / ton shock operation, into the European trading period,

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The advantages of cotton fiber bio-constraction technology

Dyeing and Finishing Technology Matsui Hengjing of Hiroshima University has long been engaged in the research of bionic technology, and through the use of natural knowledge to create beautiful and comfortable bionic fibers. In the past 10 years, fiber and textile technology have made great progress

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