Don't all cars in China have throttles?

The national six car has a throttle. Throttle is one of the most important components in modern EFI engine system, which is the breathing system of the engine and controls the air entering and leaving the engine door. Article 6 The national motor vehicle pollution emission standards are formulated for the purpose of preventing the environmental pollution caused by the exhaust of compression ignition and gas fuel ignition engines, protecting the ecological environment and safeguarding human health. It has relevant regulations on the throttle.