The Rockbridge fund heavily shorts it. Here is a register of only the large (above 0.2 %) shorts sold by Polish stock exchange (the one which starts from G):
rss.knf.gov.pl/RssOuterView/
These are just shorts sold by Warsaw Stock Exchange. Below numbers assume that only these exist, which is not true. You have individual shorts, institutional shorts below 0.2%, you have shorts from every other broker. It exists since 1949 and is going to take part in Polish green energy transformation. One of its key products is gas systems. Minor shareholders of the company are Polish pension funds and largest polish bank. You can check here:
biznesradar.pl/akcjonariat/RAFAKO
Polish Stock Exchange sells 8-month positions. Current shorts started 15th Jan 2021. Average 10 day volume is 1.128M shares which means 338.4k. Total shares outstanding is 127M shares, so every 1% of the capital shorted is 1.27M, which gives 1.27/1.128 x 10 = 11 days to cover per percent. So for 10% its 110 days to cover.