Used Digital Testing Projector CPJ-4025W 1.Travel: ... No Difficult Products to Test in the World!Used Digital Testing Projector CPJ-4025W Usage: Used Digital Testing Projector CPJ-4025W ... in the checking department and workshop and is widely used machinery, mould, tool, meter, and light industry. ... data processing system ,appearing in chinese ,can be used to gather the data and measure the point ...