One, do not use paint or engrave bamboo carving. On the chopsticks on the lead paint, benzene and other chemical substances harmful to health. The carved chopsticks seem beautiful, but easy to breed bacteria, not easy to shelter evil people and countenance evil practices, clean.

Two, do not use all kinds of color porcelain seasoning. The best dressed in glass works. Color porcelain lead, benzene and other pathogens and carcinogens. With the aging and decay of color porcelain, pigment pattern of radon pollution to food, harmful to the human body.

Three, avoid the iron pot boiled mung bean. Because of containing elements of tannin in mung bean, under high temperature conditions in iron will become black tannin iron, mung bean soup to black, have a special smell, not only affect the appetite, taste, but harmful to the human body.

Four, avoid stainless steel or iron through traditional Chinese medicine. Because Chinese medicine contains many alkaloids and various biological or chemical substances, under the condition of heating, can produce a variety of chemical reactions with stainless steel or iron, will make the drug failure, even have some toxicity.

Five, do not use black cypress or the smell of wood chopping board. Black cypress containing odor and toxic substances, use it as a chopping board not only pollute the dishes, but also can easily cause vomiting, dizziness, abdominal pain. Therefore, the preferred wood chopping board is made of folk white fruit, locust wood, birch and willow.