英文關鍵字
activated
anion
capsule
catalysis
cation
chemical
clean
closeup
column
detail
dirty
drinking
drought
dry
exchange
factory
filter
filtration
fltration
grain
granular
granules
impurity
industrial
industry
ion
ionfree
membrane
natural
nature
pharmaceuticals
pile
prevention
professional
pure
purity
remove
resin
round
sodium
softener
system
treatment
water