The green sign (also known as the green product sign) is essentially an environmental sign, which specifically refers to a graphic affixed or printed on a product or its packaging, so as to show that the production, use and treatment of the product meet the requirements of environmental protection, and it does not harm human health, is harmless to garbage or has little harm, and is beneficial to resource regeneration and recycling.

green usually symbolizes: nature, vitality, prestige and wealth. Bright green indicates growth, vitality and rejuvenation; Darker and richer green represents prestige and wealth.