Established in May 1984, Siliconware Precision Industries Co., Ltd. has become one of the leading providers of comprehensive semiconductor assembly and test services. SPIL posted annual sales of US$2.75 billion in 2017 and currently employs around 24,000 people worldwide. SPIL has been dedicated to semiconductor back-end industry when it was founded in 1984. We continue to maintain our market leading position by steadily increasing capital spending while outperforming all other competitors. To serve and support our customer's manufacturing needs, SPIL maintains business service offices in China, Europe, Japan, North America and Taiwan.