Asa tools doo is an Croatian subsidiary of an Italian company Ultrasystem Srl an precision mechanics company specialising in designing and producing special parts for rotary die cutting presses and moulds.

Asa tools doo and Ultrasystem Srl have two main areas of activity:
ROTARY DIE DIVISION: design and production of accessories and special parts for rotary machines for the personal hygiene, household paper industries etc..
MOULDS DIVISION: design and production of moulds for parts in sheet metal (motor industry, household goods etc); moulds for heat forming (food, pharmaceutical industries) etc).