[FORM 20-F ANNUAL REPORT FISCAL YEAR ENDED DECEMBER 31, 2009 TABLE OF CONTENTS Page Supplemental Information 1 1 PART I 2 Item 1. Identity of Directors, Senior Management and Advisers 2 Item 2. Offer Statistics and Expected Timetable 2 Item 3. Key Information 2 Item 4. Information on the Company 17 Item 5. Operating and Financial Review and Prospects 30] [LIST OF SIGNIFICANT SUBSIDIARIES OF SILICONWARE PRECISION INDUSTRIES CO., LTD. Company Jurisdiction of Incorporation Percentage Ownership SPIL (B.V.I.) Holding Limited British Virgin Islands 100 % Siliconware U.S.A. Inc. 100 % SPIL (Cayman) Holding Limited Cayman Islands 100 % Siliconware Technology (Suzhou) Limited People’s Republic of China 100 % EX-8.1 2 dex81.htm LIST OF SIGNIFICANT SUBSIDIARIES] [CERTIFICATION OF OUR CHIEF EXECUTIVE OFFICER I, Chi-Wen Tsai, certify that: 1. I have reviewed this annual report on Form 20-F of Siliconware Precision Industries Co., Ltd.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of] [CERTIFICATION OF OUR CHIEF FINANCIAL OFFICER I, Eva Chen, certify that: 1. I have reviewed this annual report on Form 20-F of Siliconware Precision Industries Co., Ltd.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of] [CERTIFICATION OF PERIODIC FINANCIAL REPORT 1. 2. The information contained in the report fairly presents, in all material respects, the financial condition and results of operations of the company. Chi-Wen Tsai Chief Executive Officer * A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002 has been provided to the company and will] [CERTIFICATION OF PERIODIC FINANCIAL REPORT 1. 2. The information contained in the report fairly presents, in all material respects, the financial condition and results of operations of the company. Eva Chen Chief Financial Officer * A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002 has been provided to the company and will]