Test Solution Services, Inc. is a wholly-owned subsidiary of Yamaichi Electronics Co., Ltd. (YEC)

In 1996, the company was established as Pycon Philippines, Inc. a subsidiary of Pycon, Inc. (USA). It began to carve its name in the Philippine semiconductor and electronics industry with the addition of burn-in services in its business lines in 1998 following the change of the company name to Pycon Technology Philippines, Inc. (PTPI), with its first burn-in manufacturing facility located in Laguna International Industrial Park (LIIP), Mamplasan, Binan, Laguna.

In 2002, PTPI established its presence in the northern part of the country by setting up another facility situated in SFB2 PEZA Compound, Loakan Road, Baguio City, serving its clients within the area and nearby regions.