Ka lilemo tse fetang 10 re ntse re hlahisa liphanele tsa letsatsi tse entsoeng ka boleng bo holimo tse theko e boima tse rekisitsoeng lefatšeng ka bophara.
Liphanele tsa rona li entsoe ka khalase e futhumetseng e nang le phetisetso ea khanya e phahameng, EVA, selefounu ea letsatsi, sefofane se ka morao, motsoako oa aluminium, Lebokose la kopane, gel ea Silica.
Re netefatsa liphanele tsa rona bakeng sa lilemo tse 25.
Lihlahisoa tsa rona li romeloa Europe, Bochabela bo Hare, Afrika, Amerika Boroa le linaheng tse ling tsa Asia.