routine maintenance of cold rooms
??? ??? ????? ???? ??????? ????? ?????? ????? ???? ?????? ???? ??? ??????. ??? ?? ????? ??? ?????? {??{ ???? ???????? ??? ???????? ????????, ????????? ???????? ???????? ????? ???? ?????. ??? ???? ????? {??????? ??????? ????? ?????? ?? ???????.
????| ????? ?????? ??? ??????? ??????? ??? ?? ????