阶段性纯化学物质在提交同样的申请之前不需进行预注册。

The same applies to phase-in substances that have not been pre-registered.

youdao

阶段性纯化学物质在提交同样的申请之前不需进行预注册。

The same applies to phase-in substances that have not been pre-registered.

youdao