Supplemental Notice No. 2 For Invitation To Bid No. Tiec-L-13 (Supply And Construction Of Transmission Lines 500 Kv Chaiyaphum 2 - Nakhon Ratchasima 4 (From Km.68 To Nakhon Ratchasima 4) And 230 Kv Nakhon Ratchasima 4 - Nakhon Ratchasima 3)