Kindly find attached promotion forms for you to fill-up for your recommended staff to be promoted.
No this is not correct use of kindly
Kindly refer to the attached below.
Kindly see the attached linked below.
It would be grammatically correct to say: Please find the attached.... it does not make much sense to write both kindly and please since both almost mean the same.
No, the phrase "kindly find attached for your signature" is not grammatically correct. In order to make this sentence correct, you will need to state what is attached, such as "kindly find the contract attached for your signature."
I have attached the required file, please kindly check the file.
Kindly refer to the link attached below.
Please find attached my repairing offer confirmation.
Kindly refer to the link attached below.
No, that is not good. One major problem is "it for you". Those words do not belong. They have the odd effect of creating a string of words that seems to be a sentence. It's a little difficult to explain. Better to say: Please [or kindly] find the attached file that you requested.
Kindly refer to the link attached below.
It would be more appropriate to say "Please find attached the document translated by you for stamping."