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I would be grateful if someone can help me to correct my sentance.

Kindly advise you that bulk tender of fresh water cleaning have been approved. Please place order to the relevant contractor for the building.
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Hi,

Kindly advise you that bulk tender of fresh water cleaning have been approved. Please place order to the relevant contractor for the building.

Again, I'm not sure what you mean. What is 'freshwater cleaning'? And why does it need to be tendered in bulk?

Please note that bulk tender of fresh water cleaning has been approved. Please order this from the contractor for your building.

Best wishes, Clive
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Perhaps he means, on the contrary:

We would like to kindly advise you that bulk tender of fresh water cleaning has been approved.

The original is messy, no doubt. He/she's not able to express him/herself correctly as to who is doing what to whom.