[] () a certificate provided by a company that produces chemicals or raw materials, to show what the products contain and that they have a particular quality化验证明书，分析证明（生产化学品或原料的公司出具的有关其产品含量及品质的证明书）◆All our products are thoroughly tested and supplied with a certificate of analysis.我们所有的产品都经过彻底测试，并获发化验证明书。