The tools marked in blue are used to treat raw materials of aquatic products.

color code management refers to the color code management of cutting boards, kitchen knives, containers and other processing tools used by catering service units and employees' work clothes, which are marked with different colors of red, blue, green and yellow.

processing tools for animal food raw materials are marked in red. The processing equipment for raw materials of aquatic products is marked in blue. Green label for processing equipment of plant food raw materials. Direct-entry food (finished products) processing appliances are marked in yellow.

color characteristics

four colors, red, blue, yellow and green, have been adopted as safety colors in the national standard of Safety Colors in China. These four colors have the following characteristics:

1. Red: Red is very eye-catching, which makes people feel excited and stimulated psychologically. Red light has a longer wavelength. It is not easy to be scattered by dust and fog, and it is easy to recognize in far places, that is, red is very eye-catching and has good visibility, so it is used to indicate danger, prohibition and emergency stop.

2. Blue: Although blue is not very attractive and recognizable, it works well with white, especially in the case of direct sunlight, so it is chosen as the color of instruction sign.

3. Yellow: Yellow can produce higher brightness for human eyes than red. The stripe composed of yellow and black is the most recognizable color, which can attract people's attention, so it is chosen as a warning color.

4. Green: Although the visibility and attention of green is not high, it is a symbol of freshness, youth and youth. It has psychological effects such as peace, eternity, growth and safety, so green is used to prompt safety information.