YSC1990092XXX号段制卡timeline

2018.12.17 received
2019.03.13 card is being produced
2019.03.18 card is picked up by USPS
2019.03.19 card is delivered to an agent

OPT extension EAD终于快等到了，不过卡寄到律所了，估计再等两天能到手。开心！