The diverse classification and labelling systems used different criteria for hazard assessment which in some cases meant that different health and safety information was communicated for the same goods which may be traded across national borders.
在一些情况下，采用不同危害评估标准的多种分类和标签制度意味着，对可能跨国界交易的同一货物可能有不同的健康和卫生信息。