1. This is the tracking of your parcel:
Number: LT185292769CN
Package Status: In Transit
Destination Country: United States
2016-09-22 03:14 CHINA, SHANGHAI EMS, Processed Through Facility, Your item has been processed through a facility in SHANGHAI EMS, CHINA at 3:14 am on September 22, 2016.
2016-09-20 19:50 Origin Post is Preparing Shipment
2016-09-20 19:50 Acceptance
Origin Country: China
2016-09-22 10:16 In Shanghai, left Shanghai Pudong airport
2016-09-22 10:16 Shanghai City and leave Shanghai to Chicago
2016-09-20 19:50 Shanghai, express delivery of bulk acceptance has been received (the embrace cast member name: 01, phone:)

2. And the other tracking:
Number: LT186596449CN
Package Status: In Transit
Destination Country: United States
2016-09-26 21:11 CHINA, SHANGHAI EMS, Processed Through Facility, Your item has been processed through a facility in SHANGHAI EMS, CHINA at 9:11 pm on September 26, 2016.
2016-09-22 01:19 Origin Post is Preparing Shipment
2016-09-22 01:19 CHINA, SHANGHAI EMS, Processed Through Facility
2016-09-21 00:05 Origin Post is Preparing Shipment
2016-09-21 00:05 CHINA, Acceptance
Origin Country: China
2016-09-22 10:30 In Shanghai, left Shanghai Pudong airport
2016-09-22 10:30 In Shanghai, left Shanghai for Los Angeles
2016-09-21 00:05 Shanghai, express delivery of bulk acceptance has been received (the embrace cast member name: Ding Xiujun, Tel:)

2. Normally E Packet can take from 6 to 12 working days to be deliver. This 6 to 12 working days exclude the time spent at the Customs offices in China and USA.

3. Parcel LT185292769CN has been on the road 10 working days, also take note that recently all parcels arriving in Chicago are late getting check by Customs Officers.

4. Parcel LT186596449CN has been on the road 9 working days and I did see any slowdown in Los Angeles.

5. You just need to be patient and check regularly the USPS site for any update. I did not see any problems with both parcels on the tracking I did.

Hope this help.