1. Manufacturing procurement: As an important manufacturing base in China, Shanghai has a great demand, including raw materials, equipment, tools and spare parts.

2. Construction and real estate procurement: Shanghai's construction and real estate market is very active, and it is necessary to purchase building materials, decoration materials, furniture and household items.

3. Electronic and information technology procurement: Shanghai has a strong electronic and information technology industry and needs to purchase electronic components, computer equipment and communication equipment.

4. Procurement of food and catering industry: Shanghai's food and catering market is prosperous, and it is necessary to purchase ingredients, food processing equipment and catering utensils. Purchasing industry refers to the industry that organizes and manages enterprises to purchase materials, equipment and services from suppliers. It plays an important role in commercial operation, ensuring that enterprises can obtain high-quality products and services at appropriate prices to meet the needs of production and operation.