2 9 GS1 General Specification Table 7 Explanation Minimum grade Table 7.1 of 1.5 required Table 7.2 Table 7.3 Cell size (x-dimension) of 3.9 mil allowed for laser etch marking Table 7.4 There are two basic types of non ink based direct part marks, those with “connected modules” in the “L” shaped finder pattern (GS1 DataMatrix direct part marking – A) created by DPM marking technologies such as laser or chemical etching and those with “non connected modules” in the “L” shaped finder pattern (GS1 DataMatrix direct part marking – B) created by DPM marking technologies such as dot peen