Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001493152-25-020532-index-headers.html | 2025-11-03 07:23:44 | |
| 0001493152-25-020532-index.html | 2025-11-03 07:23:44 | |
| 0001493152-25-020532.txt | 2025-11-03 07:23:44 | |
 0001493152-25-020532-xbrl.zip | 1352022 | 2025-11-03 07:23:44 |
 corpimg_001.jpg | 405361 | 2025-11-03 07:23:44 |
| engs-20250630.xsd | 93487 | 2025-11-03 07:23:44 |
| engs-20250630_cal.xml | 137535 | 2025-11-03 07:23:44 |
| engs-20250630_def.xml | 345534 | 2025-11-03 07:23:44 |
| engs-20250630_lab.xml | 629964 | 2025-11-03 07:23:44 |
| engs-20250630_pre.xml | 541896 | 2025-11-03 07:23:44 |
| ex11-2.htm | 76833 | 2025-11-03 07:23:44 |
| ex12-1.htm | 11070 | 2025-11-03 07:23:44 |
| ex12-2.htm | 11239 | 2025-11-03 07:23:44 |
| ex13-1.htm | 5170 | 2025-11-03 07:23:44 |
| ex13-2.htm | 5064 | 2025-11-03 07:23:44 |
| ex2-1.htm | 32198 | 2025-11-03 07:23:44 |
| ex4-3_1.htm | 63742 | 2025-11-03 07:23:44 |
| ex4-5_1.htm | 27868 | 2025-11-03 07:23:44 |
| ex8-1.htm | 9652 | 2025-11-03 07:23:44 |
| ex97-1.htm | 47143 | 2025-11-03 07:23:44 |
| FilingSummary.xml | 68929 | 2025-11-03 07:23:44 |
 fin_001.jpg | 10648 | 2025-11-03 07:23:44 |
 fin_002.jpg | 6530 | 2025-11-03 07:23:44 |
| form20-f.htm | 3441844 | 2025-11-03 07:23:44 |
 form20-f_001.jpg | 43121 | 2025-11-03 07:23:44 |
 form20-f_002.jpg | 34664 | 2025-11-03 07:23:44 |
 form20-f_003.jpg | 46215 | 2025-11-03 07:23:44 |
 form20-f_004.jpg | 40921 | 2025-11-03 07:23:44 |
 form20-f_006.jpg | 28256 | 2025-11-03 07:23:44 |
 form20-f_007.jpg | 28824 | 2025-11-03 07:23:44 |
 form20-f_008.jpg | 301826 | 2025-11-03 07:23:44 |
 form20-f_009.jpg | 29693 | 2025-11-03 07:23:44 |
 form20-f_010.jpg | 24593 | 2025-11-03 07:23:44 |
| form20-f_htm.xml | 2995202 | 2025-11-03 07:23:44 |
| MetaLinks.json | 1131530 | 2025-11-03 07:23:44 |
| R1.htm | 78493 | 2025-11-03 07:23:44 |
| R10.htm | 46012 | 2025-11-03 07:23:44 |
| R100.htm | 14037 | 2025-11-03 07:23:44 |
| R101.htm | 35602 | 2025-11-03 07:23:44 |
| R102.htm | 4314 | 2025-11-03 07:23:44 |
| R103.htm | 11648 | 2025-11-03 07:23:44 |
| R104.htm | 10672 | 2025-11-03 07:23:44 |
| R105.htm | 11053 | 2025-11-03 07:23:44 |
| R106.htm | 14398 | 2025-11-03 07:23:44 |
| R107.htm | 42072 | 2025-11-03 07:23:44 |
| R108.htm | 102137 | 2025-11-03 07:23:44 |
| R109.htm | 37850 | 2025-11-03 07:23:44 |
| R11.htm | 110424 | 2025-11-03 07:23:44 |
| R110.htm | 4434 | 2025-11-03 07:23:44 |
| R111.htm | 78316 | 2025-11-03 07:23:44 |
| R112.htm | 3826 | 2025-11-03 07:23:44 |
| R113.htm | 93029 | 2025-11-03 07:23:44 |
| R114.htm | 30054 | 2025-11-03 07:23:44 |
| R115.htm | 61043 | 2025-11-03 07:23:44 |
| R116.htm | 54010 | 2025-11-03 07:23:44 |
| R117.htm | 8444 | 2025-11-03 07:23:44 |
| R12.htm | 130414 | 2025-11-03 07:23:44 |
| R13.htm | 24025 | 2025-11-03 07:23:44 |
| R14.htm | 28501 | 2025-11-03 07:23:44 |
| R15.htm | 24039 | 2025-11-03 07:23:44 |
| R16.htm | 27596 | 2025-11-03 07:23:44 |
| R17.htm | 33669 | 2025-11-03 07:23:44 |
| R18.htm | 25467 | 2025-11-03 07:23:44 |
| R19.htm | 6784 | 2025-11-03 07:23:44 |
| R2.htm | 143574 | 2025-11-03 07:23:44 |
| R20.htm | 22092 | 2025-11-03 07:23:44 |
| R21.htm | 148121 | 2025-11-03 07:23:44 |
| R22.htm | 36548 | 2025-11-03 07:23:44 |
| R23.htm | 25136 | 2025-11-03 07:23:44 |
| R24.htm | 15861 | 2025-11-03 07:23:44 |
| R25.htm | 39499 | 2025-11-03 07:23:44 |
| R26.htm | 6579 | 2025-11-03 07:23:44 |
| R27.htm | 74276 | 2025-11-03 07:23:44 |
| R28.htm | 26719 | 2025-11-03 07:23:44 |
| R29.htm | 62462 | 2025-11-03 07:23:44 |
| R3.htm | 22530 | 2025-11-03 07:23:44 |
| R30.htm | 39041 | 2025-11-03 07:23:44 |
| R31.htm | 124062 | 2025-11-03 07:23:44 |
| R32.htm | 24099 | 2025-11-03 07:23:44 |
| R33.htm | 6765 | 2025-11-03 07:23:44 |
| R34.htm | 133589 | 2025-11-03 07:23:44 |
| R35.htm | 189919 | 2025-11-03 07:23:44 |
| R36.htm | 29083 | 2025-11-03 07:23:44 |
| R37.htm | 15987 | 2025-11-03 07:23:44 |
| R38.htm | 125381 | 2025-11-03 07:23:44 |
| R39.htm | 25220 | 2025-11-03 07:23:44 |
| R4.htm | 129546 | 2025-11-03 07:23:44 |
| R40.htm | 29491 | 2025-11-03 07:23:44 |
| R41.htm | 24590 | 2025-11-03 07:23:44 |
| R42.htm | 22545 | 2025-11-03 07:23:44 |
| R43.htm | 34672 | 2025-11-03 07:23:44 |
| R44.htm | 26939 | 2025-11-03 07:23:44 |
| R45.htm | 19615 | 2025-11-03 07:23:44 |
| R46.htm | 143001 | 2025-11-03 07:23:44 |
| R47.htm | 26695 | 2025-11-03 07:23:44 |
| R48.htm | 24514 | 2025-11-03 07:23:44 |
| R49.htm | 14675 | 2025-11-03 07:23:44 |
| R5.htm | 64227 | 2025-11-03 07:23:44 |
| R50.htm | 40221 | 2025-11-03 07:23:44 |
| R51.htm | 72290 | 2025-11-03 07:23:44 |
| R52.htm | 24117 | 2025-11-03 07:23:44 |
| R53.htm | 53293 | 2025-11-03 07:23:44 |
| R54.htm | 30614 | 2025-11-03 07:23:44 |
| R55.htm | 109994 | 2025-11-03 07:23:44 |
| R56.htm | 159547 | 2025-11-03 07:23:44 |
| R57.htm | 44761 | 2025-11-03 07:23:44 |
| R58.htm | 53120 | 2025-11-03 07:23:44 |
| R59.htm | 4108 | 2025-11-03 07:23:44 |
| R6.htm | 120791 | 2025-11-03 07:23:44 |
| R60.htm | 6741 | 2025-11-03 07:23:44 |
| R61.htm | 13568 | 2025-11-03 07:23:44 |
| R62.htm | 42488 | 2025-11-03 07:23:44 |
| R63.htm | 129462 | 2025-11-03 07:23:44 |
| R64.htm | 17828 | 2025-11-03 07:23:44 |
| R65.htm | 16428 | 2025-11-03 07:23:44 |
| R66.htm | 10217 | 2025-11-03 07:23:44 |
| R67.htm | 7677 | 2025-11-03 07:23:44 |
| R68.htm | 15952 | 2025-11-03 07:23:44 |
| R69.htm | 8839 | 2025-11-03 07:23:44 |
| R7.htm | 18122 | 2025-11-03 07:23:44 |
| R70.htm | 7942 | 2025-11-03 07:23:44 |
| R71.htm | 6394 | 2025-11-03 07:23:44 |
| R72.htm | 17451 | 2025-11-03 07:23:44 |
| R73.htm | 7198 | 2025-11-03 07:23:44 |
| R74.htm | 6181 | 2025-11-03 07:23:44 |
| R75.htm | 18576 | 2025-11-03 07:23:44 |
| R76.htm | 6574 | 2025-11-03 07:23:44 |
| R77.htm | 9655 | 2025-11-03 07:23:44 |
| R78.htm | 8349 | 2025-11-03 07:23:44 |
| R79.htm | 11180 | 2025-11-03 07:23:44 |
| R8.htm | 5453 | 2025-11-03 07:23:44 |
| R80.htm | 18214 | 2025-11-03 07:23:44 |
| R81.htm | 6714 | 2025-11-03 07:23:44 |
| R82.htm | 18556 | 2025-11-03 07:23:44 |
| R83.htm | 61874 | 2025-11-03 07:23:44 |
| R84.htm | 27614 | 2025-11-03 07:23:44 |
| R85.htm | 17123 | 2025-11-03 07:23:44 |
| R86.htm | 14006 | 2025-11-03 07:23:44 |
| R87.htm | 31139 | 2025-11-03 07:23:44 |
| R88.htm | 24779 | 2025-11-03 07:23:44 |
| R89.htm | 9544 | 2025-11-03 07:23:44 |
| R9.htm | 30404 | 2025-11-03 07:23:44 |
| R90.htm | 11807 | 2025-11-03 07:23:44 |
| R91.htm | 7664 | 2025-11-03 07:23:44 |
| R92.htm | 18290 | 2025-11-03 07:23:44 |
| R93.htm | 4744 | 2025-11-03 07:23:44 |
| R94.htm | 15791 | 2025-11-03 07:23:44 |
| R95.htm | 18969 | 2025-11-03 07:23:44 |
| R96.htm | 35439 | 2025-11-03 07:23:44 |
| R97.htm | 16689 | 2025-11-03 07:23:44 |
| R98.htm | 10599 | 2025-11-03 07:23:44 |
| R99.htm | 13362 | 2025-11-03 07:23:44 |
| report.css | 2768 | 2025-11-03 07:23:44 |
| Show.js | 1086 | 2025-11-03 07:23:44 |