Cathay Bank ← View details 1195 South Diamond Bar Boulevard, Diamond Bar, CA 91765 +1 909-860-8299 cathaybank.com Suggest an Edit Name* State* Locality* ZIP* Street address* Phone* Website Opening hours Monday: 09:00 am — 05:00 pm Tuesday: 09:00 am — 05:00 pm Wednesday: 09:00 am — 05:00 pm Thursday: 09:00 am — 05:00 pm Friday: 09:00 am — 06:00 pm Saturday: 10:00 am — 02:00 pm Your comments * — Required information