同时选择常用化学防腐剂苯甲酸钠作为对照。
At the same time, option chemical preservative in order to compare with the ProPis.
现在使用的防腐剂仍以化学防腐剂为主，存在食品安全隐患。
Chemical preservatives give priority in food industry presently, it may cause hidden trouble.
现在使用的防腐剂仍以化学防腐剂为主，存在食品安全隐患。
Chemical preservatives give priority in food industry presently, it may cause hidden trouble.
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