Processing non-standard parts is usually more expensive than processing standard parts.

There are several reasons why non-standard parts processing is expensive:

1. Small production batch: Non standard parts are usually produced according to customers' individual needs, so the production batch is small and the production cost is relatively high.

2. High technical difficulty: The processing of non-standard parts requires special techniques and equipment, which have higher investment costs and more complex processing processes, requiring higher-level skills and experience.

3. High material cost: Non standard parts usually require the use of special materials, which have relatively high material costs.

4. High design and manufacturing requirements: Due to the special design and manufacturing requirements of non-standard parts, more manpower and time are needed for research and testing, which increases costs.

In summary, the relatively high processing price of non-standard parts is due to a combination of factors such as small production batches, high technical difficulty, high material costs, and high design and manufacturing requirements.