Questar China Limited, founded in Hong Kong in 2001, now have 5 branch offices in Shanghai, Beijing, Chengdu ,Shenzhen and Wuhan.
Questar are the China exclusive agency of PVA TePla SAM system (SAM -Scanning Acoustic Microscope) . Questar also became the China exclusive agency of Sentronics Metrology of Wafer Metrology systems in July 2015.
Questar and PVA TePla setup the biggest professional SAM Lab in Shanghai in 2013, to demo PVA TePla SAM systems and provide outsourcing services.