The development trend of ultra-precision diamond tools is mainly reflected in the following aspects:

1. High-precision and high-efficiency: With the continuous improvement of manufacturing technology and the increasing demand for high-precision processing, the development of ultra-precision diamond tools will tend to be higher precision and higher efficiency.

2. Specialization and customization: Different industries and fields have different processing needs for ultra-precision diamond tools. In the future, the development of ultra-precision diamond tools will tend to be more specialized and customized to meet the processing needs of different fields.

3. Multi-functional integration: In order to improve processing efficiency and reduce production costs, the development of ultra-precision diamond tools will tend to integrate multiple functions, such as milling, drilling, grinding, etc.

4. Green environmental protection: With the increasing awareness of environmental protection, the development of ultra-precision diamond tools will also tend to be more environmentally friendly, such as reducing energy consumption and waste emissions.

In general, the development trend of ultra-precision diamond tools in the future will be more in line with the needs of high-precision processing and sustainable development, providing more possibilities and challenges for the development of manufacturing technology.