The project progress payment is not in place, and our company has decided to stop work now, but how to write this notice of stop work?

My * * * company has undertaken your * * * project, and now it has entered the * * * * stage. My project department reported the completed quantities of * * * (all of which have been approved by the supervision unit), but the actual quantities received are only * * *, which is far from meeting the needs of site construction. At present, due to financial problems, many manufacturers have stopped supplying materials and equipment (fans and fans) that will be ordered soon. At present, the funding problem has become a fatal factor affecting the timely completion of this project. In order to ensure the smooth completion of the project, please ask the leaders of Party A to understand our difficulties and solve our financial problems as soon as possible. Thank you!