英文關鍵字
arc
construction
craftsman
engineering
equipment
factory
fire
flash
gas
gloves
graphic
helmet
icon
illustration
industrial
iron
job
labor
light
logo
male
man
manufacture
manufacturing
mask
metal
pipe
production
protection
protective
repair
safety
skill
smoke
spark
steel
technical
technology
tool
torch
weld
welded
welder
welding
worker
workplace