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The following grades are set for the infrared absorption coefficient α (the wave number 3585 cm–1 is used) according to IEC60758.
The following grades are set for etch channel density ρ according to IEC60758.
Our seed quality gurantee the etch channel density grade 2.
In addition,we can provide grade 1.
The direction of Seed is 0°00' ±15' .The dimensions of the Z-axis direction assume it 1.5mm±0.5mm. The Seed is included in a shaded area shown by the following figure.
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