Determine the label (1) If any of the habitual use, or reasonably foreseeable use of an art material can produce chronic hazards, this material is considered likely to produce chronic adverse effects on the human body. (2) toxicologist decision should consider the following factors in: ① on behalf of the manufacturer or packer or an analytical laboratory to provide an industrial chemist now this art materials containing chemical combinations. ② the entire formula and chronic poisoning any possibility of a component has been recognized in the current accepted scientific knowledge. ③ product formulation art materials physical and chemical forms, bioavailability, concentration, and amount of each component may produce chronic toxic. ④ This art fair use of the material goods predictability whether users and other individuals through the use of this material, such as experienced teachers, or according to the market research institute to discuss and determine (unless you use the information being reviewed artistic material has previously been OK.) ⑤ formulation ingredients may produce various known synergy and antagonism. ⑥ any reasonably foreseeable use of the product may be hazardous art materials (if known) because of decomposition or burning, producing chronic adverse health effects. ⑦ various regulatory agencies and the scientific community, including international organizations as well as the National Cancer Institute cancer research may produce chronic adverse effects on the health of each component in the recipe view.