ข้อมูลการขายชอร์ตและข้อมูลการขายชอร์ตที่ยังไม่ได้ซื้อคืน
ข้อมูลการขายชอร์ต
ภาพรวมตลาด (SET และ mai)
วันที่ มูลค่าการขายชอร์ต (ล้านบาท) % มูลค่าการขายชอร์ตเทียบกับมูลค่าการซื้อขายรวม
04 มิ.ย. 2568 2,819.65 5.64%
ข้อมูลการขายชอร์ตที่ยังไม่ได้ซื้อคืน (Outstanding Short Positions) เป็นข้อมูลรายวันที่ตลาดหลักทรัพย์ฯ ได้รับรายงานจากสมาชิก
ซึ่งสมาชิกจะปรับปรุงรายการเมื่อได้รับแจ้งข้อมูลการซื้อคืนหลักทรัพย์จากลูกค้าหรือเมื่อเกิน 60 วันนับจากวันที่ลูกค้าขายชอร์ต
ข้อมูลรายหลักทรัพย์ ข้อมูลการขายชอร์ต ข้อมูลการขายชอร์ตที่ยังไม่ได้ซื้อคืน
หลักทรัพย์ ปริมาณการขายชอร์ต (หุ้น) มูลค่าการขายชอร์ต % มูลค่าการขายชอร์ต ปริมาณการขายชอร์ตที่ยังไม่ได้ซื้อคืน ณ สิ้นวัน (หุ้น) ปริมาณการขายชอร์ต
Local NVDR ทั้งหมด (บาท) เทียบกับมูลค่า Local NVDR ทั้งหมด ที่ยังไม่ได้ซื้อคืนของหลักทรัพย์ทั้งหมด/
การซื้อขายรวม จำนวนหุ้นชำระแล้ว (%)
AAI 184,400 - 184,400 832,804.00 2.33% 337,600 31,100 368,700 0.02%
AAV 699,300 45,800 745,100 878,042.00 2.36% 2,512,100 19,197,598 21,709,698 0.17%
ACE 26,200 - 26,200 34,322.00 1.00% 7,100 4,373,200 4,380,300 0.04%
ADVANC 371,200 6,800 378,000 109,922,900.00 3.82% 508,600 4,271,400 4,780,000 0.16%
AEONTS 3,200 1,300 4,500 457,650.00 2.82% 5,500 357,100 362,600 0.15%
AGE - - - - 0.00% - 298,556 298,556 0.02%
AH 2,900 1,100 4,000 54,810.00 5.60% 1,500 4,800 6,300 0.00%
AIE 6,700 - 6,700 6,968.00 0.38% - - - 0.00%
AMATA 653,400 383,600 1,037,000 14,623,040.00 8.13% 1,117,100 6,180,650 7,297,750 0.63%
AOT 993,100 2,108,900 3,102,000 101,650,725.00 11.39% 13,331,900 85,626,110 98,958,010 0.69%
AP 68,800 28,200 97,000 649,900.00 1.54% 2,638,700 9,724,400 12,363,100 0.39%
AS - - - - 0.00% 63,200 - 63,200 0.01%
ASK - - - - 0.00% - 441,700 441,700 0.06%
ASML01 - - - - 0.00% 33,850 - 33,850 0.01%
AU - - - - 0.00% - 23,600 23,600 0.00%
AURA - - - - 0.00% - 24,800 24,800 0.00%
AWC 7,951,600 1,679,300 9,630,900 18,683,857.00 11.77% 66,827,168 132,128,520 198,955,688 0.62%
BA 346,000 155,300 501,300 6,828,450.00 7.67% 3,675,500 3,035,204 6,710,704 0.32%
BAFS - - - - 0.00% 1,200 976,875 978,075 0.15%
BAM 469,800 32,300 502,100 3,119,600.00 4.31% 8,219,800 3,394,500 11,614,300 0.36%
BANPU 2,091,300 910,200 3,001,500 13,770,232.00 7.70% 19,519,400 95,633,332 115,152,732 1.15%
BAY 1,400 - 1,400 30,520.00 1.28% - 46,130 46,130 0.00%
BBGI 5,500 - 5,500 16,976.00 0.32% - 326 326 0.00%
BBIK - - - - 0.00% - 52,100 52,100 0.03%
BBL 151,100 50,200 201,300 28,442,150.00 2.58% 7,454,088 4,025,600 11,479,688 0.60%
BCH 591,300 92,700 684,000 9,324,660.00 12.64% 19,046,900 13,136,800 32,183,700 1.29%
BCP 134,700 84,600 219,300 7,915,075.00 4.78% 12,150,300 11,206,200 23,356,500 1.70%
BCPG 191,900 - 191,900 1,171,105.00 2.39% 236,700 7,084,700 7,321,400 0.24%
BDMS 2,577,000 4,077,500 6,654,500 142,456,350.00 11.22% 5,859,000 91,240,100 97,099,100 0.61%
BEC - 3,500 3,500 13,510.00 1.93% 84,600 2,081,100 2,165,700 0.11%
BEM 3,312,800 - 3,312,800 17,504,140.00 3.55% 55,160,400 87,560,604 142,721,004 0.93%
BGRIM 252,900 603,900 856,800 8,277,830.00 5.42% 3,100,900 14,918,700 18,019,600 0.69%
BH 658,900 166,500 825,400 116,333,500.00 9.83% 5,297,500 6,394,548 11,692,048 1.47%
BJC 504,300 115,300 619,600 12,401,860.00 11.81% 22,337,600 7,039,200 29,376,800 0.73%
BLA 200 1,300 1,500 23,820.00 0.05% 115,000 2,471,496 2,586,496 0.15%
BLAND 191,100 - 191,100 91,728.00 2.34% - 1,376,000 1,376,000 0.01%
BPP 131,700 - 131,700 909,000.00 6.58% 141,000 1,185,255 1,326,255 0.04%
BSRC 10,100 31,600 41,700 206,424.00 3.74% 1,663,900 1,635,100 3,299,000 0.10%
BTG 271,700 55,400 327,100 7,391,110.00 9.14% 242,400 682,700 925,100 0.05%
BTS 4,230,400 2,175,200 6,405,600 29,013,280.00 6.54% 10,278,900 114,913,748 125,192,648 0.78%
BYD - - - - 0.00% - 1,184,400 1,184,400 0.02%
CBG 157,800 113,600 271,400 15,421,975.00 8.03% 1,824,230 5,682,300 7,506,530 0.75%
CCET 1,608,700 576,300 2,185,000 11,209,250.00 2.36% 18,092,800 8,315,600 26,408,400 0.25%
CENTEL 361,000 37,300 398,300 8,880,190.00 4.43% 1,359,400 3,196,900 4,556,300 0.34%
CHG 2,110,000 1,670,400 3,780,400 6,003,448.00 12.57% 17,426,500 50,837,690 68,264,190 0.62%
CK 88,600 - 88,600 1,262,360.00 2.42% 787,200 1,999,100 2,786,300 0.16%
CKP 408,700 3,500 412,200 1,142,980.00 18.69% 4,013,900 11,786,514 15,800,414 0.19%
CN01 - - - - 0.00% 629,056 - 629,056 0.13%
CNTECH01 - - - - 0.00% 534,453 - 534,453 0.11%
COCOCO 43,200 - 43,200 266,060.00 1.38% 328,800 - 328,800 0.02%
COM7 947,700 344,100 1,291,800 24,192,000.00 7.19% 3,907,100 11,726,000 15,633,100 0.65%
CPALL 2,255,100 741,800 2,996,900 142,294,200.00 5.51% 1,604,600 45,709,053 47,313,653 0.53%
CPAXT 866,800 1,132,700 1,999,500 38,166,510.00 10.69% 3,844,400 11,121,798 14,966,198 0.14%
CPF 1,797,200 624,100 2,421,300 61,167,625.00 4.72% 4,673,400 36,978,400 41,651,800 0.50%
CPN 1,811,700 627,400 2,439,100 111,618,950.00 16.57% 6,848,900 23,333,747 30,182,647 0.67%
CRC 1,888,900 - 1,888,900 36,338,520.00 2.34% 18,759,700 23,358,126 42,117,826 0.70%
DCC - 98,300 98,300 146,869.00 2.75% 792,100 6,031,500 6,823,600 0.07%
DELTA 1,405,200 1,936,900 3,342,100 321,931,650.00 7.08% 6,887,000 51,830,840 58,717,840 0.47%
DITTO - - - - 0.00% - 380,640 380,640 0.05%
DMT - - - - 0.00% - 55,200 55,200 0.00%
DOHOME 917,900 - 917,900 3,296,862.00 3.90% 9,909,298 10,785,362 20,694,660 0.61%
E1VFVN3001 - - - - 0.00% 600,000 - 600,000 0.09%
EA 2,878,600 623,900 3,502,500 10,042,818.00 2.20% 22,667,200 57,479,294 80,146,494 1.08%
EASTW - - - - 0.00% 4,500 6,800 11,300 0.00%
EGATIF 10,900 - 10,900 64,835.00 2.90% 10,600 - 10,600 0.00%
EGCO 22,100 7,300 29,400 3,120,600.00 4.74% 221,500 2,093,300 2,314,800 0.44%
EKH - - - - 0.00% - 24,100 24,100 0.00%
EPG 23,400 - 23,400 57,596.00 1.63% - 5,158,600 5,158,600 0.18%
ERW 416,700 - 416,700 867,332.00 2.55% 1,315,900 382,202 1,698,102 0.03%
FORTH - - - - 0.00% 56,700 206,130 262,830 0.03%
FSMART - - - - 0.00% - 400,700 400,700 0.05%
FUEVFVND01 - - - - 0.00% 671,330 - 671,330 0.13%
GFPT 99,300 6,000 105,300 1,032,235.00 1.84% 47,200 1,741,165 1,788,365 0.14%
GLOBAL 634,600 2,026,300 2,660,900 14,537,395.00 26.12% 6,739,628 24,981,669 31,721,297 0.59%
GPSC 736,400 4,400 740,800 23,211,250.00 9.60% 3,001,900 9,916,973 12,918,873 0.46%
GULF 1,188,600 648,800 1,837,400 80,691,225.00 5.83% 2,591,452 16,484,997 19,076,449 0.13%
GUNKUL 1,550,800 - 1,550,800 2,342,217.00 3.84% 2,658,200 25,860,426 28,518,626 0.32%
HANA 495,000 54,100 549,100 9,945,760.00 5.51% 10,709,900 15,905,721 26,615,621 3.01%
HKCE01 620 - 620 15,263.40 4.72% 169,606 - 169,606 0.03%
HMPRO 1,778,900 1,138,300 2,917,200 22,453,285.00 13.67% 52,531,400 202,848,421 255,379,821 1.94%
ICHI 947,400 341,600 1,289,000 12,441,220.00 6.34% 2,604,300 4,306,800 6,911,100 0.53%
ILM - - - - 0.00% - 155,100 155,100 0.03%
INDIA01 - - - - 0.00% 653,790 - 653,790 0.13%
IRPC 728,300 27,200 755,500 619,511.00 3.42% 149,264,400 141,611,391 290,875,791 1.42%
ITC 112,100 130,600 242,700 2,870,380.00 2.78% 5,733,600 3,939,300 9,672,900 0.32%
ITD - - - - 0.00% - 2,216,700 2,216,700 0.04%
IVL 857,000 437,600 1,294,600 25,901,060.00 4.18% 5,082,200 21,212,100 26,294,300 0.47%
JAPAN10001 6 - 6 135.60 0.27% 119,422 - 119,422 0.02%
JAS 4,542,400 236,400 4,778,800 7,009,968.00 2.20% 30,316,156 56,711,442 87,027,598 1.05%
JMART 990,200 253,600 1,243,800 7,780,135.00 9.06% 7,224,000 3,262,500 10,486,500 0.71%
JMT 344,900 21,200 366,100 3,305,995.00 2.38% 12,855,600 6,373,038 19,228,638 1.32%
JTS - - - - 0.00% 531,100 666,500 1,197,600 0.17%
KAMART - - - - 0.00% 500,000 61,900 561,900 0.04%
KBANK 548,900 46,200 595,100 91,527,200.00 4.55% 4,954,300 14,822,200 19,776,500 0.83%
KCE 175,700 273,900 449,600 6,953,400.00 5.09% 14,451,000 13,104,600 27,555,600 2.33%
KEX - - - - 0.00% 869,900 1,040,000 1,909,900 0.05%
KKP 69,800 1,100 70,900 3,161,775.00 1.62% 2,680,500 6,171,038 8,851,538 1.05%
KSL - - - - 0.00% - 2,512,600 2,512,600 0.06%
KTB 3,579,900 807,100 4,387,000 95,247,600.00 4.71% 11,213,100 62,440,500 73,653,600 0.53%
KTC 1,936,100 - 1,936,100 72,798,325.00 8.29% 7,928,600 9,238,400 17,167,000 0.67%
LANNA 4,200 - 4,200 64,690.00 0.94% 1,500 329,600 331,100 0.06%
LH 3,848,000 1,935,500 5,783,500 22,712,878.00 24.65% 40,166,400 91,166,298 131,332,698 1.10%
LPN - - - - 0.00% 363,200 73,900 437,100 0.03%
LVMH01 - - - - 0.00% 128,295 - 128,295 0.03%
M 37,700 - 37,700 534,280.00 0.89% 83,700 1,810,100 1,893,800 0.21%
MAJOR 35,800 14,000 49,800 425,935.00 2.63% 1,787,300 3,556,067 5,343,367 0.71%
MALEE 8,900 - 8,900 61,480.00 0.11% - - - 0.00%
MBK 17,900 34,900 52,800 884,690.00 2.60% 172,500 1,059,058 1,231,558 0.06%
MC - - - - 0.00% - 176,800 176,800 0.02%
MEGA 58,900 4,500 63,400 1,607,475.00 8.68% 176,000 1,770,302 1,946,302 0.22%
MGC - - - - 0.00% - 373,500 373,500 0.03%
MINT 1,295,600 1,325,500 2,621,100 66,182,775.00 16.13% 2,431,600 66,593,957 69,025,557 1.22%
MOSHI - - - - 0.00% 71,600 4,600 76,200 0.02%
MTC 45,400 21,500 66,900 2,736,050.00 1.38% 8,956,800 21,300,300 30,257,100 1.43%
NDX01 - - - - 0.00% 321,195 - 321,195 0.02%
NER - - - - 0.00% - 483,200 483,200 0.03%
NEX - - - - 0.00% - 529,000 529,000 0.01%
ONEE - - - - 0.00% 391,500 3,375,700 3,767,200 0.16%
OR 375,300 434,500 809,800 9,642,380.00 3.14% 19,134,200 37,463,800 56,598,000 0.47%
ORI 98,000 - 98,000 166,964.00 1.15% 9,608,900 12,708,850 22,317,750 0.91%
OSP 164,300 200,000 364,300 5,834,020.00 3.44% 4,591,400 17,665,600 22,257,000 0.74%
PIN - - - - 0.00% - 40,200 40,200 0.00%
PLANB 150,800 697,500 848,300 4,283,780.00 3.02% 455,000 14,800,364 15,255,364 0.35%
PLAT - - - - 0.00% - 34,300 34,300 0.00%
PR9 76,700 - 76,700 1,871,120.00 1.63% 1,753,800 - 1,753,800 0.22%
PRM 122,300 - 122,300 691,000.00 1.11% 746,000 10,136,200 10,882,200 0.44%
PSH 6,000 - 6,000 25,872.00 1.37% 135,900 1,297,467 1,433,367 0.07%
PSL 84,800 3,400 88,200 564,925.00 3.42% 1,876,200 5,102,200 6,978,400 0.45%
PTG 206,000 - 206,000 1,263,860.00 3.14% 59,700 9,692,500 9,752,200 0.58%
PTL - - - - 0.00% - 104,600 104,600 0.01%
PTT 286,400 1,256,900 1,543,300 45,913,175.00 2.87% 22,786,600 105,066,800 127,853,400 0.45%
PTTEP 270,400 708,600 979,000 96,025,750.00 7.31% 535,000 34,686,300 35,221,300 0.89%
PTTGC 1,165,500 385,900 1,551,400 31,193,990.00 6.11% 9,518,800 20,781,600 30,300,400 0.67%
QH 359,500 164,800 524,300 746,154.00 6.00% 10,417,000 34,265,599 44,682,599 0.42%
RAM - - - - 0.00% - 32,000 32,000 0.00%
RATCH 68,200 7,800 76,000 1,938,000.00 4.65% 649,500 9,937,505 10,587,005 0.49%
RBF 39,700 5,100 44,800 190,602.00 2.20% 4,105,800 4,196,100 8,301,900 0.42%
RCL 25,900 - 25,900 695,825.00 0.65% 617,500 3,583,875 4,201,375 0.51%
RJH - - - - 0.00% - 68,499 68,499 0.02%
ROJNA 29,200 - 29,200 133,138.00 2.52% 344,700 100 344,800 0.02%
RS - - - - 0.00% 1,808,000 302,356 2,110,356 0.10%
S - - - - 0.00% - 67,800 67,800 0.00%
SABINA 10,100 - 10,100 163,050.00 2.16% 1,500 119,200 120,700 0.03%
SAFE - - - - 0.00% - 24,400 24,400 0.01%
SAMART - - - - 0.00% 317,200 750,700 1,067,900 0.11%
SAPPE 53,300 - 53,300 1,532,375.00 5.42% 900,200 626,400 1,526,600 0.50%
SAT 44,300 31,200 75,500 919,270.00 7.51% 7,900 821,208 829,108 0.19%
SAWAD 347,300 200,800 548,100 9,845,770.00 3.33% 3,656,670 7,672,693 11,329,363 0.68%
SC - - - - 0.00% 4,744,400 2,032,800 6,777,200 0.16%
SCB 887,700 212,600 1,100,300 127,925,600.00 5.17% 3,128,600 6,765,600 9,894,200 0.29%
SCC 376,200 200,200 576,400 93,648,250.00 9.12% 2,841,400 19,362,450 22,203,850 1.85%
SCCC 600 - 600 88,500.00 1.31% 1,600 92,235 93,835 0.03%
SCGP 956,700 92,400 1,049,100 16,975,610.00 7.24% 2,309,600 15,413,258 17,722,858 0.41%
SGP - - - - 0.00% 5,100 2,700 7,800 0.00%
SINGER - - - - 0.00% 284,000 - 284,000 0.03%
SIRI 2,150,700 1,612,800 3,763,500 4,967,820.00 16.42% 29,904,000 95,028,000 124,932,000 0.72%
SISB 255,600 31,800 287,400 4,188,490.00 7.66% 674,100 4,444,700 5,118,800 0.54%
SJWD 131,500 110,900 242,400 2,085,370.00 5.76% 790,800 841,420 1,632,220 0.09%
SKY 81,600 - 81,600 1,104,550.00 6.05% 139,900 39,195 179,095 0.02%
SNNP 35,600 - 35,600 366,090.00 5.71% 2,235,500 537,800 2,773,300 0.29%
SP50001 - - - - 0.00% 525,497 - 525,497 0.11%
SPA - - - - 0.00% - 185,100 185,100 0.01%
SPALI 254,700 342,600 597,300 8,550,090.00 11.91% 2,091,500 13,831,400 15,922,900 0.82%
SPCG - - - - 0.00% 2,800 263,900 266,700 0.03%
SPRC 191,800 284,200 476,000 2,661,890.00 4.78% 1,817,000 61,134,583 62,951,583 1.45%
SSP - - - - 0.00% - 253,832 253,832 0.02%
STA 602,900 381,100 984,000 12,141,640.00 20.78% 6,417,400 7,054,075 13,471,475 0.88%
STANLY - - - - 0.00% - 10,600 10,600 0.01%
STAR5001 - - - - 0.00% 457,814 - 457,814 0.09%
STECON 59,900 - 59,900 440,740.00 0.68% 955,200 67,200 1,022,400 0.07%
STGT 577,600 128,600 706,200 4,548,710.00 16.07% 8,159,500 349,849 8,509,349 0.30%
STPI 110,800 - 110,800 361,070.00 1.31% 313,700 94,000 407,700 0.02%
SUPER - - - - 0.00% 3,576,700 38,020,600 41,597,300 0.15%
SUPEREIF 900 - 900 4,446.00 1.04% 900 - 900 0.00%
SUSCO - - - - 0.00% - 1,650,500 1,650,500 0.17%
TAIWANAI13 - - - - 0.00% 100,000 - 100,000 0.01%
TAIWANHD13 - - - - 0.00% 40,000 - 40,000 0.01%
TASCO 133,900 56,200 190,100 2,690,850.00 5.92% 288,500 2,075,600 2,364,100 0.15%
TCAP 102,100 63,300 165,400 7,766,750.00 6.48% 1,061,400 4,149,828 5,211,228 0.50%
TFG - - - - 0.00% 1,090,000 2,539,100 3,629,100 0.06%
THANI 53,200 - 53,200 86,384.00 1.15% 40,000 26,877,502 26,917,502 0.43%
THCOM 51,700 - 51,700 433,575.00 3.50% 4,272,600 1,430,600 5,703,200 0.52%
THG - - - - 0.00% 486,300 1,754,601 2,240,901 0.26%
TIDLOR - 218,600 218,600 3,606,950.00 1.34% - 3,299,859 3,299,859 0.11%
TIPH 6,400 - 6,400 119,150.00 1.26% - 1,315,000 1,315,000 0.22%
TISCO 191,300 37,300 228,600 22,300,900.00 4.13% 6,188,800 2,973,000 9,161,800 1.14%
TKC - - - - 0.00% - 4,600 4,600 0.00%
TKN 170,600 4,700 175,300 997,595.00 1.79% 5,115,900 6,882,100 11,998,000 0.87%
TLI 225,900 532,800 758,700 8,234,910.00 10.08% 2,703,300 9,912,700 12,616,000 0.11%
TOA 19,700 - 19,700 208,190.00 0.66% 26,000 795,106 821,106 0.04%
TOP 960,600 165,400 1,126,000 33,202,750.00 6.54% 2,279,600 5,745,710 8,025,310 0.36%
TPIPL 141,100 4,300 145,400 134,671.00 2.74% 3,363,900 7,116,300 10,480,200 0.06%
TPIPP 41,100 26,800 67,900 150,738.00 7.51% 106,700 2,715,498 2,822,198 0.03%
TQM 4,200 7,600 11,800 184,060.00 3.43% - 8,698 8,698 0.00%
TRP - - - - 0.00% - 29,800 29,800 0.01%
TRUE 1,778,300 582,600 2,360,900 29,333,170.00 4.46% 7,558,800 22,559,732 30,118,532 0.09%
TTA 62,100 134,600 196,700 814,486.00 11.42% 14,924,700 2,789,600 17,714,300 0.97%
TTB 61,168,600 5,704,700 66,873,300 127,651,137.00 21.29% 480,881,400 285,095,254 765,976,654 0.79%
TTCL - - - - 0.00% - 1,900 1,900 0.00%
TTW 35,000 100 35,100 307,125.00 2.80% 11,500 3,696,300 3,707,800 0.09%
TU 1,398,400 383,100 1,781,500 17,783,610.00 11.51% 8,994,800 24,486,300 33,481,100 0.75%
TVO 38,600 3,200 41,800 918,160.00 2.08% - 363,240 363,240 0.04%
UNIQ - - - - 0.00% 2,000 - 2,000 0.00%
UTP - - - - 0.00% - 200 200 0.00%
VGI 1,206,900 2,674,900 3,881,800 8,576,684.00 6.46% 43,598,900 77,124,590 120,723,490 0.60%
WHA 6,270,700 3,508,300 9,779,000 30,642,678.00 9.63% 79,902,100 69,260,008 149,162,108 1.00%
WHAUP 19,100 49,600 68,700 220,950.00 6.03% 21,800 1,195,500 1,217,300 0.03%
WORK - - - - 0.00% 78,900 - 78,900 0.02%
WSOL - - - - 0.00% 114,400 731,500 845,900 0.03%
XO - - - - 0.00% 30,000 35,400 65,400 0.02%
XPG - - - - 0.00% 19,167,400 - 19,167,400 0.18%
หมายเหตุ:
- ไม่รวมรายการขายชอร์ตของสมาชิกที่เป็นผู้ร่วมค้าหน่วยลงทุนหรือผู้ดูแลสภาพคล่องของหน่วยลงทุนของกองทุนรวมอีทีเอฟ
เพื่อบัญชีบริษัทประเภทเพื่อทำกำไรจากส่วนต่างของราคาหรือเพื่อดูแลสภาพคล่อง แล้วแต่กรณี
- ข้อมูลการขายชอร์ตที่ยังไม่ได้ซื้อคืน - หลักทรัพย์ที่ไม่ใช่หุ้นสามัญจะใช้จำนวนหลักทรัพย์จดทะเบียนกับ ตลท. แทนจำนวนหุ้นชำระแล้ว
ที่มา: ตลาดหลักทรัพย์แห่งประเทศไทย