2. Select the object to be tested, and the object to be tested must meet the following conditions: 1) The object to be measured must be flat, and the curved surface cannot be measured; 2) The part to be measured must be a single color, and mixed colors cannot be measured 3) The diameter of the measured part must be greater than 8mm, less than 8mm can not be measured. 4) It is impossible to detect liquid, powder and paste instruments. When the test object meets the above four basic conditions then we can start testing.
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Guangzhou Ruixin Touch Control Technology Co., Ltd. , https://www.weetaach.com