As of (September 2021), China’s VAT rates are classified according to different projects and industries. For general taxpayers’ concrete floor hardening (B material supply) projects, the VAT rate is generally 13%. However, please note that tax rates may vary based on region and specific policy changes, so it is best to consult the local tax department or a professional tax advisor to obtain the most accurate tax rate information before actual operation.

It’s not easy to answer the question, I hope you will adopt it