Photo taken on July 18 shows that residents of Bangoin County are picking vegetables in the greenhouse. [China Tibet News/Kelsang Jigme]

Bangoin County is located in Nagqu Prefecture, southwest China's Tibet Autonomous Region. It is a complete grassland farming county. At an average altitude of 4700 meters, the plateau hypoxia environment is not suitable for vegetable planting. In recent years, under the counterpart support of China Petrochemical Corp, greenhouses are set up, which solves the vegetable issue to some extent.

In 2016, with an investment of 1.75 million yuan, China Petrochemical Corp established nearly 1000 square meters of greenhouses in Bangoin County. Now vegetables including green pepper, tomato, and cucumber are ripe and the output is expected to reach 10000 jin.