Oct 1 (Reuters) - Holista CollTech Ltd HCT.AX :
* HOLISTA COLLTECH SIGNS THREE-YEAR EXCLUSIVE DEAL WITH COSTANZO'S FOR GI LITE
* COSTANZO'S IS TO PURCHASE 165 TONS WORTH US$1.9M OF GI LITE IN FIRST YEAR AND 220 TONS FOR US$2.5M FOR EACH OF NEXT TWO YEARS