1. This is the full tracking of your parcel:
China Post Register Air Mail Tracking System
Parcel No.RR419065358CN tracking result
2016-07-01 11:32:06.0 Wenzhou city 茶山Post Office received
2016-07-01 16:51:57.0 Wenzhou city 茶山Post Office customs scan
2016-07-01 17:42:12.0 leaving Wenzhou city 茶山Post Office ，next station Wenzhou center
2016-07-04 08:35:31.0 Wenzhou Transit Station export security scan
2016-07-04 09:34:57.0 Wenzhou Transit Station export customs scan (domestic transit )
2016-07-08 08:47:26.0 Wenzhou Transit Station export security scan
2016-07-08 09:19:22.0 Wenzhou Transit Station export customs cleared
2016-07-12 09:42:00.0 arrive 福州Airport
2016-07-12 09:43:30.0 leaving 福州Airport going to next airport/seaport

2. I also found this:
International Mail# RR419065358CN Tracking Result
Summary
Tracking number Origin Destination Status
RR419065358CN CHINA CANADA On route

History Detail
Local date/time Activity Location Remarks
01-Jul-2016 11:32 Received by Post Office 32503501
08-Jul-2016 09:19 Departure export customs WENZHOU

3. An finally this:
Tracking # :RR419065358CN
Date / Time : 2016/08/10 - 09:26
Description :There is no information available for this international item. Tracking by Canada Post is not a feature for this product.
Service Type :International Inbound Registered

4. Now what I suspect happen to your parcel, I might be wrong all together.
Your parcel has been on the road for 75 days. We know that the parcel departed China around the 12 Jul. We also have a tracking of Canada Post on the 10 Aug at 9:26 AM. I suspect either Canada Post deliver the parcel and they should have a signature for it or Canada Post lost the parcel. Another theory would be the arrival date of the parcel in Canada (10 Aug) and it has not got through the Canadian Customs yet. So the parcel is sitting in a bin awaiting to be check by Customs Officer.

5. May I suggest you call Canada Post or even go to your local Canada Post and try to talk to the supervisor and tell him about your problem about your parcel from China possibly arriving in Canada and you have not receive it.

6. I would not be surprise that Canada Post are going to say, they can not do anything and to contact China Post. If they do that, then you need to contact the seller so he can contact China Post and ask an investigation about your parcel from China to Canada.

Hope this help