1. This is the tracking of your parcel:
Number: RJ846357229CN
Package Status: In Transit
Destination Country: Singapore
Origin Country: China
2016-09-16 16:09 Yiwu Exchange Bureau, have been exported directly
2016-09-15 19:51 Yiwu Exchange Bureau, have been exported to open
2016-09-15 09:17 Directorate of international e-commerce, Yiwu city, away, the next station "Yiwu"
2016-09-15 09:17 Directorate of international e-commerce, Yiwu city, away, the next station "Yiwu"
2016-09-14 16:41 Yiwu international electronic commerce branch
2016-09-14 13:05 Directorate of international e-commerce, Yiwu has been accepted
======================================
Number: RJ846460291CN
Package Status: In Transit
Destination Country: Singapore
Origin Country: China
2016-10-16 15:23 Yiwu Exchange Bureau, have been exported directly
2016-10-16 09:52 Yiwu Exchange Bureau, have been exported to open
2016-10-14 05:42 Directorate of international e-commerce, Yiwu city, away, the next station "Yiwu"
2016-10-14 02:00 Yiwu international electronic commerce branch
2016-10-14 01:15 Directorate of international e-commerce, Yiwu has been accepted
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2. I also found this:
International Mail# RJ846357229CN Tracking Result
Summary
Tracking number Origin Destination Status
RJ846357229CN CHINA SINGAPORE On route

History Detail
Local date/time Activity Location Remarks
14-Sep-2016 13:05 Received by Post Office 32206600
16-Sep-2016 16:52 Departure export customs CNYIWA

And this one:
International Mail# RJ846460291CN Tracking Result
Summary
Tracking number Origin Destination Status
RJ846460291CN CHINA SINGAPORE On route

History Detail
Local date/time Activity Location Remarks
14-Oct-2016 01:15 Received by Post Office 32206600
16-Oct-2016 16:15 Departure export customs CNYIWA

3. So you got the 2 story of your parcels above. Like you said possibly the first parcel got lost. The second one is On Route to you, hope you get it soon.

Hope this help.