第四章主要研究“参考适用规则”和“非缔约国不受约束原则”的关系。

Chapter 4 mainly researches the relationship between "the Rule of Reference" and "the Pacta Tertiis Principle".

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此次与会的约有100位代表来自30个国家，既有缔约国，也有非缔约国。

Present at this meeting are some 100 delegates from 30 countries including not only contracting countries, but also non-contracting ones.

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非缔约国当事人可以选择适用公约，但当事人营业地所在国提出保留的内容必须遵守。

The parties may exclude the application of this Convention or, subject to article 12, derogate from or vary the effect of any of its provisions.

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