Monthly sales
| Item | 1 | 2 | 3 | 4 | Less | Total |
| Month / Year | LED | Sensor parts | System products | Others | Sales return & Sales discounts and allowance | Net of operating revenues |
| Apr-12 | 313,132,000 | 160,280,000 | 58,963,000 | 20,536,000 | 10,163,000 | 542,748,000 |
| Mar-12 | 323,721,000 | 153,273,000 | 73,869,000 | 26,499,000 | 22,805,000 | 554,557,000 |
| Feb-12 | 304,578,000 | 142,103,000 | 68,175,000 | 19,014,000 | 7,553,000 | 526,317,000 |
| Jan-12 | 295,535,000 | 116,071,000 | 38,449,000 | 24,319,000 | 4,365,000 | 470,009,000 |
| Dec-11 | 256,294,000 | 95,582,000 | 134,142,000 | 18,129,000 | 3,220,000 | 500,927,000 |
| Nov-11 | 308,280,000 | 126,940,000 | 108,003,000 | 14,169,000 | 4,209,000 | 553,183,000 |
| Oct-11 | 286,868,000 | 135,119,000 | 67,817,000 | 29,127,000 | 10,905,000 | 508,026,000 |
| Sep-11 | 316,441,000 | 120,737,000 | 55,981,000 | 39,991,000 | 7,070,000 | 526,080,000 |
| Aug-11 | 351,959,000 | 143,172,000 | 43,427,000 | 58,080,000 | 27,812,000 | 568,826,000 |
| Jul-11 | 370,240,000 | 147,407,000 | 65,991,000 | 37,153,000 | 13,176,000 | 607,615,000 |
| Jun-11 | 396,700,000 | 145,214,000 | 85,671,000 | 28,892,000 | 4,274,000 | 652,203,000 |
| May-11 | 407,215,000 | 151,183,000 | 86,547,000 | 25,575,000 | 5,848,000 | 664,672,000 |
| Apr-11 | 385,132,000 | 145,195,000 | 65,020,000 | 25,538,000 | 4,683,000 | 616,202,000 |
| Mar-11 | 381,211,000 | 154,341,000 | 61,742,000 | 30,344,000 | 19,337,000 | 608,301,000 |
| Feb-11 | 369,220,000 | 110,305,000 | 80,596,000 | 23,275,000 | 6,085,000 | 577,311,000 |
| Jan-11 | 426,519,000 | 157,563,000 | 68,827,000 | 34,799,000 | 8,335,000 | 679,373,000 |
| Dec-10 | 356,663,000 | 124,094,000 | 162,545,000 | 60,299,000 | 9,371,000 | 694,230,000 |
| Nov-10 | 396,079,000 | 131,587,000 | 60,852,000 | 38,275,000 | 6,638,000 | 620,155,000 |
| Oct-10 | 393,443,000 | 138,641,000 | 46,858,000 | 34,430,000 | 7,486,000 | 605,886,000 |
| Sep-10 | 400,400,000 | 147,090,000 | 69,437,000 | 45,901,000 | 4,245,000 | 658,583,000 |
| Aug-10 | 505,278,000 | 165,457,000 | 49,677,000 | 30,819,000 | 5,311,000 | 745,920,000 |
| Jul-10 | 516,084,000 | 147,726,000 | 74,914,000 | 39,121,000 | 8,790,000 | 769,055,000 |
| Jun-10 | 465,337,000 | 139,092,000 | 29,931,000 | 39,438,000 | 4,441,000 | 669,357,000 |
| May-10 | 418,585,000 | 131,718,000 | 64,081,000 | 41,235,000 | 15,560,000 | 640,059,000 |
| Apr-10 | 440,599,000 | 113,198,000 | 72,776,000 | 31,763,000 | 14,131,000 | 644,205,000 |
| Mar-10 | 379,552,000 | 118,402,000 | 61,031,000 | 40,322,000 | 11,108,000 | 588,199,000 |
| Feb-10 | 294,869,000 | 91,347,000 | 35,330,000 | 17,018,000 | 2,136,000 | 436,428,000 |
| Jan-10 | 306,570,000 | 115,589,000 | 165,780,000 | 18,521,000 | 4,885,000 | 601,575,000 |
| Dec-09 | 348,414,000 | 89,003,000 | 164,748,000 | 28,074,000 | 5,410,000 | 624,829,000 |
| Nov-09 | 379,827,000 | 107,875,000 | 64,105,000 | 27,382,000 | 6,093,000 | 573,096,000 |
| Oct-09 | 362,251,000 | 107,476,000 | 119,677,000 | 39,260,000 | 26,194,000 | 602,470,000 |
| Sep-09 | 369,908,000 | 94,047,000 | 22,181,000 | 38,376,000 | 18,258,000 | 506,254,000 |
| Aug-09 | 339,990,000 | 94,760,000 | 26,437,000 | 29,991,000 | 7,541,000 | 483,637,000 |
| Jul-09 | 315,031,000 | 91,798,000 | 45,236,000 | 24,086,000 | 30,584,000 | 445,567,000 |
| Jun-09 | 292,552,000 | 85,976,000 | 64,223,000 | 22,555,000 | 27,245,000 | 438,061,000 |
| May-09 | 279,048,000 | 68,222,000 | 26,830,000 | 26,982,000 | 16,674,000 | 384,408,000 |
| Apr-09 | 255,040,000 | 70,629,000 | 36,162,000 | 20,260,000 | 10,683,000 | 371,408,000 |
| Mar-09 | 219,196,000 | 61,353,000 | 91,906,000 | 15,429,000 | 8,782,000 | 379,102,000 |
| Feb-09 | 201,027,000 | 52,535,000 | 55,035,000 | 6,810,000 | 5,309,000 | 310,098,000 |
| Jan-09 | 159,147,000 | 32,133,000 | 96,683,000 | 10,609,000 | 9,895,000 | 288,677,000 |
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