邊度有得買o-ring?

邊度有得買o-ring?
想換過晒啲fitting既o-ring
我多數用EK的
睇過EK官網D o-ring好鬼貴
https://www.ekwb.com/shop/outer-g1-4-fitting-o-ring-6pcs
https://www.ekwb.com/shop/ek-hdc-fitting-16mm-o-ring-6pcs

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