January 01, 1970
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Complex sheet calender are used to produce graphite reinforced sheet, etc.
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.
The gasket is made by cutting modified PTFE sheet, and is widely used in medicine, food, petrochemical, paper making and water treatment industries.
