答：
1、证书上的公司名称、公司地址、产品名称、型号或产品实物等任何信息发生了变化，或有新产品需要增加到证书上，都必须进行变更申请。
2、证书变更需要提交相关变更的信息资料或实物进行申请，流程一般需要 1-1.5 个月，相关费用依据变更内容而定，请另行咨询我司客服。
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