Founders (partners) v.o.s. are both natural person and legal person (except for special laws, e.g. bank), domestic and foreign, min. 2, the maximum number is not fixed, but it is true for the same law that one can be an unlimited guarantor only in one company (but does not refer to the societas or the silent participation).
Natural person must meet general conditions for operation of the trade according to the special law and it must not be impeded by the pursuit of the trade (irrespective of the scope of business of the company).
If partner is a legal person, his rights and duties are associated with participation in v.o.s., or authorized representative (but must meet the conditions set for the natural person).