允许极限

• Look out for the many of the quality assurance schemes , which guarantee chemical treatment of produce has strictly followed manufacturers recommendations and residues levels at point of harvest are either zero or well below maximum permissible and therefore safe limits
  注意许多保证农产品的化学处理品质管理计划已严格地遵照制造商的建议，并且在农获时的残余水平需是零或是比最大可允许极限还要小很多因此是安全的