参展产品必须是经工商、税务、卫生等职能主管部门审查合格，并取得农产品和食品相关资质的企业所生产的无污染、安全、优质、营养类食品。
All the exhibits must have agricultural-product or food related qualifications after the checkup by the business administration, tax authorities and sanitation department, and must be pollution-free, safe, and nutrient food with good quality.