The system application quality of XXXXXX products produced by our company meets the requirements of national standard XXXXXX and is sold to XX unit of Party A for installation and use. Our company is willing to ensure the application quality of the system for the production, installation and use of XXXXXX products. The guarantee period is 25 years, and the guarantee time is XXXXX-XXXXX. This letter of guarantee is in triplicate, one for Party A and two for Party B. ..
Party a: XXXXXXXXX company
Party b: XXXXXXXXX company
Signature of Party A's representative: XXX
Signature of Party B's representative: XXX
XXXX year month day