Zupapa 12Ft Trampoline with TUV Certificate Steel Ladder Net Enclosure Safety Pad Jumping Mat Rain Cover Feet FREE EXTENSION WARRANTY: Considering Christmas is coming and trampoline is rarely used on winter times, Zupapa Trampoline launches FREE EXTENSION WARRANTY plan. If your order is placed from October 1st, 2017 to March 31,2018, your warranty date will start from May 1st, 2018. That's to say, your warranty will be extended much longer time ranging from 1 to 6 months automatically. All Zupapa trampolines get TUV certified. TUV Report Reference No. for Zupapa: 70.300.13.544.01-00. Maybe you are curious why some trampolines are declared as TUV tested, but the others are TUV certified. What's the difference? Actually, TUV certified is totally different with TUV tested, because TUV certification is a comprehensive test of the chemical composition of the material and the structure design of the product to ensure its safety. However, TUV test approval is only doing test for one part of the product, such as weight capacity. That's to say, TUV certification means totally safety, but TUV test is cheap rather than safe!