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| 0000013239-21-000012-index.html | 2021-05-12 16:56:48 | |
| 0000013239-21-000012.txt | 2021-05-12 16:56:48 | |
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| exhibit311aq12021.htm | 10209 | 2021-05-12 16:56:48 |
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| exhibit321q12021.htm | 6601 | 2021-05-12 16:56:48 |
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| Financial_Report.xlsx | 72982 | 2021-05-12 16:56:48 |
| hsc-20210331.htm | 1398162 | 2021-05-12 16:56:48 |
| hsc-20210331.xsd | 52555 | 2021-05-12 16:56:48 |
| hsc-20210331_cal.xml | 62445 | 2021-05-12 16:56:48 |
| hsc-20210331_def.xml | 376426 | 2021-05-12 16:56:48 |
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| hsc-20210331_htm.xml | 1151417 | 2021-05-12 16:56:48 |
| hsc-20210331_lab.xml | 679732 | 2021-05-12 16:56:48 |
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| report.css | 2767 | 2021-05-12 16:56:48 |
| Show.js | 1085 | 2021-05-12 16:56:48 |