The mark consists of A sunflower with yellow petals that fade to dark yellow, the center is half yellow, half dark yellow outlined on the right in dark yellow. The sunflower has 2 leaves on the left hand side they are light green and dark green with white veins. There is a half circle curving up from the leaves over the sunflower it fades from light green to dark green and back to light green it is partially outlined on the top and bottom in dark green. Part of the leaves green veins curve over the yellow petals on the left. There are the stylized letter HD in the center of the flower they are black the cross of the H is green. There is a flower on the curve of the letter D it is outlined in black, it has a green center with darker green flecks, the petals are yellow & dark yellow with white or clear high lights, depending on what it is printed on. The stylized letters HYDRO DYNAMIC TECHNOLOGY, INC. are below the flower; HYDRO is black with the cross of the H being green. Dynamic is white inside a dark green rectangle. Technology, Inc. is black..