又硬又粗进去好爽A片春色视频,大量国内自拍AV手机观看,99re这里只有国产中文精品国产精品,人妻无码AV一区二区三区

With the improvement of modern productivity, the requirements for products and technology are higher and higher, especially for modern farms. A reasonable and standardized design is very important for the energy efficiency ratio of a modern farm. Let's talk about the key points of modern farm design.
First of all, according to the requirements of production technology, the production area of a large-scale modern pig farm should have the following functions: pig house, reserve house, breeding house, pregnancy house, delivery house, conservation house and fattening house (breeding house).
In addition, artificial insemination needs male pig house, introduction isolation needs introduction isolation house, sick pig isolation needs sick pig isolation house, and breeding pig farm needs testing house.

The process flow is as follows:

According to this process, we can design the field of each pigsty, so that the input and output of land and construction can get the best results.
QINGDAO PUHUI AGRICULTURE AND ANIMAL HUSBANDRY SCIENCE AND TECHNOLOGY CO.,LTD. specializes in designing pig farms and serving more than 5000 sows. It has been praised by customers all the time. It gives customers reasonable planning and design in the early stage and spends the least money to design and build the most scientific and modern pig farms.
If you have any questions about the pig farm, please contact us. The purpose of QINGDAO PUHUI AGRICULTURE AND ANIMAL HUSBANDRY SCIENCE AND TECHNOLOGY CO.,LTD.  is to make the breeding simple, reliable, environmentally friendly and efficient!