动物总动员电影免费观看,亚洲国产精品日韩,天师捉妖姬,91精品国产综合久久久久久粉嫩,久久成人精品,久久久国产欧美,午夜久久久久久久久久影院

語(yǔ)言
news

Ventilation system for pig farm

In the farm, the smell is always not so good, but there are great differences between the farms, among which the design of the ventilation system is more important.
The types of ventilation system are divided into natural ventilation mode, full mechanical negative pressure ventilation mode, combination mode of natural ventilation and mechanical ventilation, mechanical positive pressure ventilation mode.
Horizontal ventilation: in places where the summer is not very hot and the duration is not long, such as northeast China, Inner Mongolia and northeast Xinjiang, horizontal ventilation can be used, which is suitable for nursing houses and delivery houses, but not for fattening houses,
Longitudinal ventilation: cooling by fan and wet curtain. The calculation of the ventilation system should be based on the pig's body weight in order to obtain the best wind speed.

QINGDAO PUHUI AGRICULTURE AND ANIMAL HUSBANDRY SCIENCE AND TECHNOLOGY CO.,LTD. specializes in designing pig farms and serving more than 5000 sows. Professional design pig farm, patented product 50 "fiberglass fan, stainless steel fan blade, fiberglass shell, Siemens motor, super high energy efficiency ratio!
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!

  • Contact us
  • Web:http://m.xianshenghezi.com/en/
  • http://qdph.en.alibaba.com
  • Tel/Whatsapp/Wechat:+8618266221406 +15621127700
  • Email:elsa@sdpuhui.cn nanaliu@sdpuhui.cn
  • Focus on us
  • Sales service hotline
  • 18660928200
  • Address:The streets of Bei'an Li Ling Industrial Park in Qingdao city of Jimo
  • Address:China Shandong Linyi Town Secondary Village Development Zone

Copyright 2017 Qingdao Puhui Agriculture and Animal Husbandry Science and Technology Co., Ltd. All Rights Reserved

桦川县| 奎屯市| 株洲市| 纳雍县| 虞城县| 靖州| 广德县| 德阳市| 绥德县| 富裕县| 奈曼旗| 宜黄县| 霸州市| 上思县| 泸州市| 师宗县| 衡南县| 门头沟区| 哈巴河县| 昌平区| 九龙县| 明光市| 威远县| 洪泽县| 平远县| 肃宁县| 社会| 延寿县| 彭泽县| 咸丰县| 怀宁县| 蚌埠市| 灌南县| 天镇县| 阿拉善左旗| 城市| 调兵山市| 镇赉县| 瑞丽市| 泸定县| 抚松县|