The mark consists of the wording "LINDE HYDROGEN FUELTECH" in white and five vertically placed curved lines forming four partial concentric circles, all against a blue background. The design has an outer half circle on the left side in yellow to the outside of a thinner white line forming a half circle which continues as a thicker curved white line at the top right, forming together close to three quarters of a second concentric circle. The thicker white line at the top right is outside of a thinner curved white line forming part of a third concentric circle of which another part is a curved thin white line forming a quarter of the circle at the lower left inside of the white half circle. A curved yellow line at the bottom right forms a small partial inmost fourth concentric circle. The words "LINDE HYDROGEN FUELTECH" appear in white horizontally beginning slightly above and slightly to the left of the center of the circles and with the word "FUELTECH" appearing outside and to the left of the four partial concentric circles.