Features and Applications:

1. Wet type pre-grinding machine

2. Taking advantage of various waterproof abrasive sand paper with different granularity, it can be used to pre-grind various metal and alloy materials. 

3. By using this machine, manual grinding can be replaced by mechanical grinding so as to improve specimen preparing efficiency, also the deforming and heating traces produced until cutting can be removed completely. 

4. This will be suitable for people to observe and measure the metallographic structure of specimen under microscope.