https://www.epo.org/en/service-support/faq/searching-patents/asian-patent-information/china/sources-information/where-3

Where can I find official information about patent fees in China?

Fee payments for specific applications can be checked in CNIPA’s “China and Global Patent Examination Information Inquiry” database.  An English language search interface is available. Should you have any questions on how to access this source, please contact us.

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