January 01, 1970
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Made of ramie fiber by braiding, impregnating with graphite, and shaping with silicon oil...
Each PTFE graphite yarn is covered with aramid fiber in its center
The products made of asbestos are rejected step-by-step when people demanding more and more on the health and environment-protection. Expandable teflon and flexible graphite are used much more widely than ever in modern industry.
