1. service items and product types: different processing items and product types require different production processes, equipment and human resources, so the charging standard will be determined according to the specific situation.

2. Piece rate: the processing fee is calculated according to the actual output quantity. Every time a certain number of finished products are completed, there will be corresponding charges.

3. Material cost: The processing cost is determined according to the quantity or weight of raw materials consumed. This method is suitable for products with high raw material cost in the whole production process.