External visual  inspection,X-Ray,DECAP,dimension inspection, coplanarity inspection, chemical wipe and scratch testing are all authenticity testing items. According to different products and their own customized needs, customers can choose the testing items that are suitable for them.

The authenticity test is based on relevant standards, and the appearance, internal structure, and wafer of the chip are comprehensively tested, so as to distinguish the authenticity according to the test data. External visual inspection is carried out from the packaging, body, printing, pins, etc. Through the packaging testing of whether there is any abnormality in the label, inner and outer packaging integrity and taping on the package;Through the microscope observation of whether the marking,date code, country of origin and position of the manufacturer's logo are accurate, also whether there are signs of re-coating and re-polishing, whether there are unknown residues on the chip surface, and whether there are signs of refurbishment on the pins.And secondly, whether there are signs of coating on the chip surface by physical scratching/chemical wiping. Specific content includes:

1. Packaging inspection, such as labeling, outer packaging integrity, taping, etc.;

2. Ontology testing, such as scratches, dirt, damage, unfilled, overflow, etc.;

3. Marking testing, such as typo, offset, missing print, multi-printing, blurring, tilt, displacement, hyphenation, secondary coating printing, no word mold, etc.;

4. Pin testing, such as pin loss, pin damage, pin spacing, pin width, pin bending, pin span, pin length difference, pin standing height, pin coplanarity, pin inclination, pin oxidation, re-pin re-planting, etc.