Hi,
You can find them also at Unimart, which has many other Filipino offerings:
Unimart One Stop Shopping
www.unimartonestop.com7315 West Dempster Street
Niles, IL
(847) 663-8388
Uni-Mart One Stop Shopping
www.unimartonestop.com5845 North Clark Street
Chicago, IL
(773) 271-8676
Uni-Mart
unimartonestop.com
Strawberry Hill Plaza Shopping Center,
1028 West Golf Road
Hoffman Estates, IL
(847) 755-1082
I have seen them on Argyle Street, specifically:
Hoa Nam Grocery
1101-3 W. Argyle St
Chicago, IL 60640
While Unimart will have a vast array of Filippino offerings, it is hunt and peck at Hoa Nam though I have certainly seen those sausages.
I have seen longanisa at H-Mart in the meat section. In the same case, they have the large Filippino dumplings you can steam.
Regards,