Part number : 3921026620 (39210-26620)
Part name : SENSOR ASSY-OXYGEN
Application model : Kia New Pride
Net weight (in plastic bag) : 0.114kg
Gross weight : 0.153kg

3921026620 SENSOR ASSY-OXYGEN

Made in Korea.
Produced by Hyundai Kefico.

On this oxygen sensor I found the text:
KEFICO LSF4.2
9 350 931 012 (it seems Bosch OE number)
39210-26620 (Hyundai OE number)
License Bosch
1a74522 (I don’t know what it is)
12V / 0723

This is the terminal with cap:

If you open a cap, you see the terminal:

Another oxygen sensor is produced by Kefico, licensed Bosch.
Part number 39210-23500 :
https://koreapartsinfo.com/2018/12/15/3921023500-sensor-assy-oxygen-hyundai-avante-xd/

I’m not sure if all oxygen sensors are produced by Kefico based on license of Bosch. I will keep checking for more information.