A week. Official website of Waerwina Printing Co., Ltd., Chaoan District, Chaozhou City shows that 18 inch aluminum film balloon can be used for half a month if it is filled with air, and it can only be used for 7 days if it is filled with nitrogen or hydrogen. Chaozhou Chaoan Walvina Printing Co., Ltd. was established on September 28th, 20th18th. The legal representative is Chen Pei 'e, with a registered capital of 65,438 yuan+500,000 yuan. The enterprise address is located in Toyo Industrial Zone, Baolong Village, Anbu Town, Chaoan District, Chaozhou City. Its industry is printing and recording media reproduction, and its business scope includes printing, production and sales of packaging and decoration printed matter and other printed matter, paper-plastic packaging products.