CTPH provides trade policy researchers with a comprehensive and granular observation of China's tariff policy from its pre-WTO era to the present, capturing variations in China's trade policy across time, products, and instruments. The data set includes the ad valorem and specific tariff rates at the HS-8 level for nearly 8,000 Chinese tariff lines across all policy instruments, from the negotiated and interim Most-Favored-Nation import duty rates to export duty rates.