The zinc-rich Thousand-year-egg is made with a new lead-free formula, that is the zinc compound and toon instead of lead oxide, water soluble alkaline fibrous membrane instead of mud wrap.
富锌松花皮蛋是采用新型配方，利用锌的化合物和香椿组合取代氧化铅，实行无铅加工。同时采用水溶性碱性纤维膜取代黄泥包裹。
The zinc-rich Thousand-year-egg is made with a new lead-free formula, that is the zinc compound and toon instead of lead oxide, water soluble alkaline fibrous membrane instead of mud wrap.
富锌松花皮蛋是采用新型配方，利用锌的化合物和香椿组合取代氧化铅，实行无铅加工。同时采用水溶性碱性纤维膜取代黄泥包裹。
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