Freezing principle: with water as the working medium, water is transformed into ice wrap, no pollution, no additional power source is required, only the existing facilities of the factory are used; Energy saving and environmental protection: no cutting fluid processing, extend the service life of tools such as prop grinding wheels, ice can reduce brittle materials and other defects on product packaging; Safe and efficient: the fixture itself does not contain any moving parts, can achieve trouble-free, maintenance-free operation to save abnormal processing time, improve production efficiency;