JOINT FILING AGREEMENT
Exhibit A
The undersigned hereby agree that the foregoing statement on Schedule 13G is filed on behalf of each of the undersigned in accordance with the provisions of Rule 13d-1(k) under
the Securities Exchange Act of 1934, as amended, and that all subsequent amendments to this statement on Schedule 13G may be filed on behalf of each of the undersigned without the necessity of filing additional joint filing agreements.
Date: August 6, 2020
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ADVANTEST AMERICA, INC.
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By:
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/s/ Xxxxx Xxxxxxxx
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Name: Xxxxx Xxxxxxxx
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Title: Chief Financial Officer
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ADVANTEST CORPORATION
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By:
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/s/ Xxxxxxx Xxxxxxx
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Name: Xxxxxxx Xxxxxxx
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Title: Director, Managing Executive Officer
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