2. Ensure the company's trade safety: Customs officers need to understand the trade safety issues and customs requirements involved in the company's import and export business, so as to ensure that the company's trade activities comply with national laws and regulations and customs requirements and avoid violations and economic losses.
3. Improve the company's economic benefits: Customs declarers need to know about the customs duties, tax rates, tax rebates and other issues involved in the company's import and export business, so as to rationally plan and manage the company's import and export business in their work and improve the company's economic benefits.