Greenhouse vegetable production was originally dedicated equipment, single-span steel greenhouse manufacturers, along with the development of greenhouse production applications become increasingly widespread. Greenhouse construction principle: choose open terrain, flat or gentle slopes where the sun to build greenhouses, such a place with good lighting, single-span steel greenhouse cost, high ground temperature, single-span steel greenhouses offer convenient even irrigation. Not to build greenhouses on the air to reduce heat loss and wind damage to the greenhouse. Greenhouse vegetable production was originally dedicated equipment, along with the development of greenhouse production applications become increasingly widespread. Greenhouse cultivation: leafy cultivation. Xiwen heat of leaf vegetables, such as fungus vegetables, spinach and other greenhouse cultivation in September-October planting, single-span steel greenhouse, the late implementation of insulation covering ahead of the market, coupled with conventional cultivation, basically reached the annual supply.