Door and window hardware quality assurance period is how much
Door and window works of the warranty period can refer to 2 years.
According to Article 40 of the Regulations on Quality Management of Construction Projects, under the normal conditions of use, the minimum warranty period for the construction project is: (1) the foundation works and the main structure of the infrastructure works, housing construction, and the design documents (3) heating and cooling system, for the two heating period, for the heating and cooling system, for the two years of heating, (4) electrical pipelines, water supply and drainage pipelines, equipment installation and renovation works for 2 years. The warranty period for other projects shall be agreed upon by the Employer and the Contractor. The warranty period of the construction project shall be calculated from the date when the acceptance is completed
