At Haoshi carbon fiber Co.,Ltd, we produce all of our own carbon and graphite insulation under the strictest quality ... include premium high purity Carbon Fiber based of Carbon fiber board, rigid graphite board, graphite felt, graphite insulation cylinders, and carbon-carbon ... ISO 9002Solar cells: PAN-graphite felt electrode in the vanadium redox flow batteryContact Us:HaoShi Carbon Fiber Co., Ltd. ( ...