Why is steel colored after cutting? #Science #Unzip #Metalworking #CoolKnowledge

Decompression video of the skilled worker series!

jixiepangke

22 Views

Those are super cool machines!!

jixiepangke

51 Views

Husky|Funny Choreography

Ximijialiangfen

119 Views

Speed Bump Worker Series

jixiepangke

64 Views

How heavy is the tamping machine's hammer? #PopularScience #Unzip #TampingMachine #LayingFoundations

haoqiwanhuatong

1 View

"The tiger in question strongly demands that the video be deleted"

Tianbuguomiao

219 Views

Crowded Subway (HD Version)

Jinzhengmeiyongde

53 Views

Speed Bumps!! Skilled Worker Series~

jixiepangke

199 Views

Men's Speed Bump: A Satisfactory Work Site

jixiepangke

148 Views

Irresistible mechanical charm~

jixiepangke

123 Views

Take you into the real world of underground miners

jixiepangke

58 Views

Let's take a look at some satisfying work scenes! 10.9

jixiepangke

116 Views

Men's speed bumps: those cool machines~

jixiepangke

148 Views

Today's stress-relief video!! Worker series ~2.10

jixiepangke

16 Views

Why do honey collectors only harvest a small portion of the hive when harvesting honey at high altit

haoqiwanhuatong

49 Views

Unzip video of the irresistible mechanical series~

jixiepangke

374 Views

Why do we need to grind off the bark? This is the process of peeling and rounding the wood before pe

haoqiwanhuatong

24 Views

How harsh is the environment on a polar research vessel? #PopularScience #Unzip #ResearchShip #Polar

haoqiwanhuatong

13 Views

Why do sheep stay still when they are being shorn?

jixiepangke

66 Views

Let's take a look at those fascinating machines together

jixiepangke

20 Views