different quality, different cost and different production efficiency.

1. Different quality: The finished product has gone through several key processes in processing, and its quality is usually better than that of the semi-finished product. If it is not strictly controlled in the production process, the quality of the finished product may decline, resulting in cracks, deformation and other problems, while the quality of the semi-finished product is usually inferior to that of the finished product, which often requires post-processing and repair in downstream production links.

2. Different costs: finished products need to go through more processing and assembly processes, so the production cost is usually higher than that of semi-finished products. However, compared with semi-finished products, finished products are easier to control the production cost.

3. Different production efficiency: manufacturing finished products requires more labor and machine input, and the production efficiency is also low, while semi-finished products can be mass-produced, so the production efficiency is higher. In addition, the production cycle of semi-finished products is relatively short, which can meet the needs of consumers more quickly.