ARLINGTON, WA -- CheckSum, a supplier of low-cost in-circuit test systems, has opened an sales and support office in Shanghai.

John VanNewkirk, president and chief executive, said the company has more than 500 installations in China since first selling there in the 1990s.

The facility will be headed by Tony Tan, field product specialist, a veteran of Teradyne and Landrex Technologies.

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