Glass fibres. Low thermal expansion coefficient. Good thermal properties.Low thermal expansion coefficient. Good thermal properties.Low thermal expansion coefficient. Good thermal properties.Low thermal expansion coefficient. Good thermal properties.Low thermal expansion coefficient. Good thermal properties.Low thermal expansion coefficient. Good thermal properties.Low thermal expansion coefficient. Good thermal properties.Low thermal expansion coefficient. Good thermal properties.Low thermal expansion coefficient. Good thermal properties.Low thermal expansion coefficient. Good thermal properties.Low thermal expansion coefficient. Good thermal properties.Low thermal expansion coefficient. Good thermal properties.Low thermal expansion coefficient. Good thermal properties.Low thermal expansion coefficient. Good thermal properties.Low thermal expansion coefficient. Good thermal properties.Low thermal expansion coefficient. Good thermal properties.Low thermal expansion coefficient. Good thermal properties.Low thermal expansion coefficient. Good thermal properties.Low thermal expansion coefficient. Good thermal properties.Low thermal expansion coefficient. Good thermal properties.Low thermal expansion coefficient. Good thermal properties.Low thermal expansion coefficient. Good thermal properties.Low thermal expansion coefficient. Good thermal properties.Low thermal expansion coefficient. Good thermal properties.Low thermal expansion coefficient. Good thermal properties.Low thermal expansion coefficient. Good thermal properties.v