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By certification 
adjustable height: 35mm-750mm
application: SPA /fountain square/swimming pool/coach park
parts:
head:with built-in spacer or movable spacer
extender:100mm or 120mm
base
corrector:0-8%
application: SPA /fountain square/swimming pool/coach park
parts:
head:with built-in spacer or movable spacer
extender:100mm or 120mm
base
corrector:0-8%