Needless to say, fake commodities have already done great harm to our society. On the one hand, .they will ruin the good reputation of genuine products and disturb the balance of the market. On the other hand, the prevalence of such products has hindered interpersonal relationship and resulted in the decline of public morality. As a consequence, they have wasted exhaustible resources, endangered people’s precious life and health, and in the long run eroded public trust。