$400b: The estimated value of commercial planes China plans to buy in the next 20 years grahamearnshaw 16 years ago Source: Sohu News Boeing: China to buy $600b worth of jets over next 20 yearsDateSeptember 8, 2011In relation toManufacturingAir China pledges support for domestic planemakerDateFebruary 2, 2010In relation toTransport & LogisticsBoeing estimates greater demand in ChinaDateSeptember 6, 2013In relation toTransport & Logistics