First of all, you have to look at the tender documents. Are there any tough requirements of the tenderer for the project, such as the quality must meet the national standards and the warranty period is two years? You have to look at the tender documents carefully before writing the commitment letter. Some commitments will be explained in the attachment of the tender documents, that is to say, there is a format. If not, you have to read the tender documents and make a commitment and response to them according to some hard requirements put forward in them. If you want numbers, you have to specify a number, and if you want degree words, you have to specify a degree word. The general format is as follows:

To: (the tenderee)

Our company promises:

1, ×××××××××

2, ××××××××××

3, ××××××××

Company name:

year, month and day.