How to write a critical letter about mistakes in work?

Leaders:

Hello!

During the bidding reply in xxxx, due to personal negligence, I entered the venue to bid back after the deadline for bidding reply was announced by the host of the bidding office, which led to the rejection of our company's bid, causing certain economic losses and adverse effects to the company, and also wasting all the efforts of the company's leaders, business departments and technical departments. I want to say sorry to everyone first.

Secondly, in the future work, I will redouble my efforts, hoping to make up for the economic losses and my guilty heart caused by this mistake!

At the same time, this incident deeply alerted me: we must be strict with ourselves, be serious and responsible, finish what we started, and do it 100%. We must never relax and give up when we finish 99%, because the last 1% lost the game, as the saying goes: a miss is a thousand miles away. At the same time, I hope everyone can learn from this tear and take a warning to prevent such incidents from happening in future work!

Finally, I would like to thank the failed bidding experience, and thank this self-review book for giving me an opportunity to correct my bad habits, which made me take a step towards success.

I am here to convey

Salute!

Reviewed by: xxx

Xx，xx，XX，XX