BeiDou-3 MEO-3 & MEO-4 - CZ-3B/YZ-1 - XSLC - February 12, 2018 (05:03 UTC)

[input~2]

Can anyone with better eyesight than mine (99% of the population!) see the launch vehicle serial number on any of the photos please?

From a post on 9ifly

CZ-3B Y47

[jcm]

Can anyone with better eyesight than mine (99% of the population!) see the launch vehicle serial number on any of the photos please?

From a post on 9ifly

CZ-3B Y47

And I assume YZ-1 Y6?

[input~2]

Satellites' power and control subsystems come from Shanghaï Aerospace
http://shanghai.xinmin.cn/xmsq/2018/02/12/31360379.html

and confirmation of CZ-3B Y47 from the picture (YZ-1 number is unfortunately unreadable)

[input~2]

Another short launch video
http://tv.cctv.com/2018/02/12/VIDEyuw5vYg1piySjHaBYVga180212.shtml

[Liss]

Satellites delivered to Plane B where BD2-M5, BD2-M6, M3-S, BD3-M1 and BD3-M2 are also located.

[GELORD]

Yuanzheng-1 (YZ-1) / Y6

[Liss]

As far as I can see the 43207 satellite has been positioned at B-6 slot and the 43208 bird at B-5.