英文關鍵字
saponification
hot
process
cold
soap
factory
chemical
industry
purification
glycerin
removal
sodium
carbonate
perfumes
alkali
refining
deodorization
reaction
chamber
cooked
crude
temperature
heat
pressure
mixer
reactor
raw
water
boiler
healthcare
steam
smoke
fluid
chemistry
closeup
spray
cooling
maintaining
balancing
sprinkling
industrial
business
employment
production
line
pipeline
manufacturing
boiling
kettle
bangalore
transformation
liquid
pitching