1. This is the full tracking of your parcel:

Parcel No.CC007305109ES tracking result
2016-05-03 13:51:00.0 Spain received
2016-05-04 09:18:00.0 arrive Spain Madrid Transit Station
2016-05-04 21:06:00.0 leaving Madrid
2016-05-04 21:26:00.0 Madrid export customs cleared
2016-05-11 13:08:08.0 Beijing Transit Station import customs scan
2016-05-11 14:28:43.0 Beijing Transit Station import customs cleared (domestic transit )
2016-05-14 23:32:48.0 Guangzhou Transit Station import customs scan
2016-05-16 11:03:26.0 Guangzhou Transit Station import customs cleared (domestic transit )
2016-05-18 09:23:50.0 arrive Guangzhou city 南沙金洲Post Office delivery office
2016-05-31 13:03:26.0 Guangzhou city 南沙金洲Post Office received
2016-05-31 13:03:26.0 Guangzhou city 南沙金洲Post Office 已rejected
2016-06-02 10:34:18.0 arrive Guangzhou city 番禺桥南Post Office delivery office
2016-06-04 09:54:09.0 Guangzhou city 番禺桥南Post Office delivered

2. Parcel was delivered by the following post office:
2016-06-04 09:54 Guangzhou Panyu bridge post office

Hope this help.

1. Sorry about that, those China sign mix me up.

2. What I found is this:
2016-05-31 13:03 Nansha, Guangzhou Jinzhou post offices have been returned

That is probably the rejected we see.

3. Then we see this:
2016-06-04 09:54 Guangzhou Panyu bridge post office, has been voted

Normally when it say, has been voted, it means delivered.

4. Have you ask recipient if they received the parcel?

5. If recipient is telling you he did not received the parcel, then you could also ask Spain post office to launch an investigation about the parcel.

Hope this help.