刚刚online chat， 客服提供了一个白金加副卡的offer
The offer is to add up to 4 additional cards to earn total 80,000 bonus points ( 20,000 points on each card) for meeting spending of $2,000 on each within first 6 months ( 183 days).
Example - if on this chat you add -
if you add 1 card = 20,000 points
if you add 2 cards = 40,000 points
if you add 3 cards = 60,000 points
if you add 4 cards = 80,000 points