Rainbow color   

                                  professional agent RAL card in Germany, classical RAL color sample of 4 bit digital RAL card for 70 years have been the choice of colour standards. In the beginning there were only 40 different colors so far has been developed for 200. The color of light and shade basic standard matte is RAL840-HR, with the color of light and shade based   luster; the standard is RAL841-GL. These two kinds of color sample contains important research institute used to meet the long-term large-scale industrial demand   color sample, registration is applied to the design of color sample, they also contain security color and color signal accords with the standard of DIA.