W101C Automotive Grade flexibie graphite foil with carbon content of no less than 96.0%,no binders or fillers.
W101B Standard Industrial Grade flexible graphite foil with carbon content of no less than 98% ; no binders or fillers.
W101D Premium Grade flexible graphite foil with carbon content of no less than 99%with conventional inorganic passivating inhibitor for oxidation and corrosion resistance; no binders or fillers.
W101Z High Purity Nuclear Grade flexible graphite foil with carbon content of no less than 99.85% ; no binders or fillers.