Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000354707-20-000028-index-headers.html | 2020-02-14 16:28:16 | |
| 0000354707-20-000028-index.html | 2020-02-14 16:28:16 | |
| 0000354707-20-000028.txt | 2020-02-14 16:28:16 | |
 0000354707-20-000028-xbrl.zip | 32439 | 2020-02-14 16:28:16 |
| exhibit101cooperationa.htm | 89331 | 2020-02-14 16:28:16 |
| exhibit9912-12x20press.htm | 12747 | 2020-02-14 16:28:16 |
| FilingSummary.xml | 1767 | 2020-02-14 16:28:16 |
| Financial_Report.xlsx | 5786 | 2020-02-14 16:28:16 |
| he-20200212.xsd | 4544 | 2020-02-14 16:28:16 |
| he-20200212_cal.xml | 596 | 2020-02-14 16:28:16 |
| he-20200212_def.xml | 1446 | 2020-02-14 16:28:16 |
| he-20200212_lab.xml | 26138 | 2020-02-14 16:28:16 |
| he-20200212_pre.xml | 13552 | 2020-02-14 16:28:16 |
 heicatalyst2a38.jpg | 48357 | 2020-02-14 16:28:16 |
| heiform8-k2x12x20.htm | 54604 | 2020-02-14 16:28:16 |
| heiform8-k2x12x20_htm.xml | 4270 | 2020-02-14 16:28:16 |
| MetaLinks.json | 18160 | 2020-02-14 16:28:16 |
| R1.htm | 38610 | 2020-02-14 16:28:16 |
| report.css | 2767 | 2020-02-14 16:28:16 |
| Show.js | 1085 | 2020-02-14 16:28:16 |