How China's food factories feed 1.4 billion people

China Stringer Network/Reuters

The production line at a meat factory in China.

China's population has swelled to nearly 1.4 billion people. That's a lot of mouths to feed - China's food-processing industry had an estimated $2 trillion in revenues for 2014, and more than 35,000 processing and manufacturing plants churned out food products for the country's residents.

The food industry has been riddled with scandal, and many factories have been found to be breaking quality standards. More recently, Chinese civilians have become more "food savvy" and are looking for healthier options, taking cooking classes, and switching to white meat over red.

However, food-manufacturing plants continue to operate, and with an estimated 13.22 million Chinese people living in urban areas, the demand for packaged food has skyrocketed.

Ahead, 20 images that show just how massive some of these Chinese food plants are.