The Singapore authorities have sent back 26 of the 35 trains delivered by a Chinese company because if found defects in them. "Our engineers discovered that 26 of the 35 trains delivered by the manufacturer had cracks in the structure connecting the car body and the bogie after they were delivered in 2013," Lee Ling, managing director of SMRT, the subway rail operator in Singapore, said in a statement. "The defective trains, which are still under warranty, will be repaired by the manufacturer. All 26 trains will be repaired by 2023," he said.