Warranty period:
A The foundation engineering, foundation engineering and main structure engineering of building construction are the reasonable service life of the project specified in the design documents (note: this life may reach the service life of the building);
B Roof waterproofing works, leakage prevention for bathrooms, rooms and external walls with waterproof requirements, 5 years;
C heating and cooling system, which consists of two heating periods and cooling periods;
D. Installation and decoration of electrical pipelines, water supply and drainage pipelines and equipment, which is 2 years;