TEMPE, Ariz.--(BUSINESS WIRE)--Amkor Technology, Inc. (Nasdaq: AMKR) today announced plans to expand its state-of-the-art assembly and test factory located in China’s Shanghai Waigaoqiao Free Trade Zone. With this project, Amkor expects to increase its manufacturing facilities in China by 45% to nearly 60,000 square meters of cleanroom space. “Demand for assembly and test services is booming in China, particularly for advanced products employing wafer-level, die stacking and package stacking te