Good night How are you all friends Praise be to God for the blessings and health so that we can re-share posts on hive at this time of enjoying.
First of all, I would like to thank the good ones, namely hive friends, friends who are there, and most specifically, hive friends from Indonesia.
On this occasion I want to share some of the posts that I have prepared, namely the Keteng chain post the function of the keteng chain is, to be able to move the valve shaft and piano, so that it can work to open and close the valve.
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From @yupis