Form 56-1

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Annual Registration Statement

As at December 31, 2011

The Siam Cement Public Company Limited

Table of Contents

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|   | 1.  General Information                                 | 2     |
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|   | 2.  Risk Factors                                        | 5     |
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|   | 3.  Business Operation                                  | 13    |
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|   | 4.  Operation of Each Business Unit                     | 30    |
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|   | 5.  Asset Used in Operation                             | 65    |
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|   | 6.  Legal Disputes                                      | 79    |
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|   | 7.  Capital Structure                                   | 80    |
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|   | 8.  Management                                          | 83    |
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|   | 9.  Internal Control                                    | 130   |
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|   | 10. Connected Transactions                              | 139   |
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|   | 11. Financial Position and Operating Performance        | 144   |
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|   | 12. Other related Information                           | 167   |
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