The lead penstock needed materials mainly include the lumber and the binding agent. The lumber uses in manufacturing the penstock, the requirement texture is honest, the structure is thin and is uniform, nature soft or slightly soft, has brittleness slightly.

The application method is quite simple, is the same with the ordinary pencil, after picture good, with the pen which gets wet in above smudges, the color will dissolve. If gets wet directly with the color pencil's pen department the picture.

brilliance arrangements: According to white, silver, yellow, gold, green, red, blue, purple, black color foreword permutation. In each a series of colors permutates from Ming Daoan.rainbow arrangements: According to red, orange, yellow, green, blue, blue, purple, black, white, golden, silver color foreword permutation.

The color lead is pencil's one kind, the primary data is the graphite. The manufacture process may divide into technological processes and so on pencil board, lead, lead penstock, end product decoration.

The color are many and varied, the picture comes out the effect to be pale, fresh simple, mostly is advantageous for the rubber to delete. Is itches the choice with the process, has the high adsorption color rendering property high-quality particle pigment to make.

Makes a rough draft first, with pencil light making a rough draft. The back water dissolves the color lead color. The approximate chart leaves the wish the effect. Then the back water color writing brush gets wet the color part exaggerates start. Exaggeration time must be careful.