The main practice area of Ms. Li Yanchun is international trade remedy investigations including antidumping, countervailing measures. Ms. Li Yanchun is specialized in providing legal and accounting services for the clients. Ms. Li Yanchun has represented major Chinese exporters and exporting industries and overseas investments of Chinese companies in dozens of antidumping and countervailing investigations conducted by foreign governments, mostly United States, but also EU, Canada, Australia, Brazil, Mexico, India, Indonesia, Egypt, Malaysia, and Pakistan etc, and the products and industries covered include steel products, chemical products, machinery and electronics products, light-industrial products, textiles products and food products etc.

Ms. Li Yanchun participated in WTO dispute settlement cases and provided advises to the Chinese government.

The practice of Ms. Li Yanchun also includes customs and trade compliance. Ms. Li Yanchun has assisted many clients in establishing trade compliance system and in foreign customs inspections.

Ms. Li Yanchun has been ranked as the leading and recommended counsel in international trade and WTO law by Chambers & Partners and Legal 500.