Audi introduces new CNG A3 Sportback
Green Car Congress
SEPTEMBER 16, 2020
The ultra high-strength outer shell comprises two layers: an inner layer of carbon fiber-reinforced polymer (CFRP) and an outer layer of glass fiber-reinforced polymer (GFRP). More than half of them sell biomethane produced entirely from waste, and this number is increasing. The inner layer is a gas-tight polyamide vessel.
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