一级做a爱片久久毛片A高清,一级a性色毛片久久无码,韩国丰满一级毛片免费

  • Home
  • About Us
  • Product display
  • Application Example
  • News
  • Factory Display
  • Contact Us
  • 0086-536-3521951
    中文
    Shandong Hengyuan Lvfeng Agriculture and Animal Husbandry Technology Co. LTD. 0086-536-3521951
    Hy- Push-pull type exhaust fan

    HY series High class fan is mainly made up of blade , Centrifugal Opening Device, motor , outer frame, protectingnets, supporting frames, shutters. lt is made based on aerodynamic, effectively reduce the wind resistance.

    Read more +
    HY - Cooling pad

    Corrugated paper has high intensity structure, corrosion resistant, long service life.Fine percolating and absorbing water to ensure water drip wet the wall.

    Read more +
    HY-Silos

    Silo coaming panel designed in semi-circular shape,smooth,strong with good looking.Lower coaming panel equipped with water drip edge,prevent raindrops falling on the lower cone or other parts.

    Read more +
    Negative pressure fan Cooling pad Heating equipment Fecal cleaning equipment Other fans Farming equipment Breeding accessories

    Products

    Products

  • Hy- Push-pull type exhaust fan

    Hy- Push-pull type exhaust fan

    Read more
  • Hy- Heavy hammer type exhaust fan

    Hy- Heavy hammer type exhaust fan

    Read more
  • HY - cow house hanging exhaust fan

    HY - cow house hanging exhaust fan

    Read more
  • HY - cow house hanging exhaust fan

    HY - cow house hanging exhaust fan

    Read more
  • HY-FRP cone fan

    HY-FRP cone fan

    Read more
  • HY-FRP cone fan

    HY-FRP cone fan

    Read more
  • Hy-Butterfly cone fan

    Hy-Butterfly cone fan

    Read more
  • HY-Air cooler

    HY-Air cooler

    Read more
  • About Us
    Shandong Hengyuan Lvfeng Agriculture and Animal Husbandry Technology Co. LTD. established in 2010, is a professional manufacturer engaged in the research, development, sale and service of all kinds of cooling heating and animal husbandry equipment. such as : negative pressure fan, cooling pad, greenhouse and poultry fan, light traps , manure scraper machine, feed silo, poultry farm equipment and so on.
    We are located in Weifang City Shandong Province with convenient transportation access. Dedicated to strict quality control and thoughtful customer service, our experienced staff members are always available to discuss your requirements and ensure full customer satisfaction.
    Read More +
    13
    +

    Over 13 years of industry experience

    200
    +

    Over 200 product types

    2010

    The company is established in 2010

    365
    days

    Sincere service for 365 days

    Video

    R&D and Innovation
    x

    Application Example

    Read more +

    News

    Read more +
  • 12-202023
    Precautions for installing negative pressure fans

    After the wet curtain is blocked, its effective intake area will be greatly reduced, which will affect the wind speed inside the house and the cooling effect of the wet curtain. Therefore, the filter and wet curtain should be cleaned every two weeks. When cleaning the wet curtain, you can first rinse the sediment with a coarse water pipe, and then add a wet curtain cleaning agent such as Ouke to the water tank. Start the cleaning of the biofilm on the surface of the wet curtain and replace it with a clean water source.

  • 12-202023
    Common problems and solutions for wet curtain maintenance

    After the wet curtain is blocked, its effective intake area will be greatly reduced, which will affect the wind speed inside the house and the cooling effect of the wet curtain. Therefore, the filter and wet curtain should be cleaned every two weeks. When cleaning the wet curtain, you can first rinse the sediment with a coarse water pipe, and then add a wet curtain cleaning agent such as Ouke to the water tank. Start the cleaning of the biofilm on the surface of the wet curtain and replace it with a clean water source.

  • 12-202023
    Performance characteristics of push-pull fans

    The outer frame material is made of thick galvanized sheet with strong corrosion resistance; The outer frame is made using CNC machine tools, with excellent craftsmanship and high precision; There are two types of high-strength aluminum alloy cast steel for the wheel hub: a new type of twisted stamping formed fan blade;

  • 12-202023
    Working principle of negative pressure fan

    Negative pressure is a process of energy conversion that allows air to create convection in the workshop. The negative pressure horn fan is driven by electricity to convert into kinetic energy and wind energy to exhaust indoor air from the outside, thereby reducing indoor pressure. Under the action of atmospheric pressure, fresh outdoor air is replenished from the opposite window and door where the negative pressure horn fan is installed, generating air convection negative pressure.

  • 国产一卡二卡国产无码精品区_黄色亚洲AV电影手机看片AV午夜_毛片特黄片免费的_国产国内精品在线观看_丁香五月婷小女一区二区免费电影_欧美一区日韩在线_免费看黄片点进即看_国产黄片免费看视频看视频_国产一区二区无码 日韩精品成人无码亚洲av无码_无码专区人妻系列日韩精品_殴美日韩成人人人精品免费_激情综合网成人高清视频一区二区_国产精亚洲视频亚洲_在线观看成人免费视频1000_三级片电影一区二区三区_一本一道波多野结衣AV一区_A区色逼逼不卡91AV一区二区 成人免费黄色视频蜜臀_午夜高清无码成人国产精品夜色影院_最近2019年日本中文字幕免费_永久免费看a片无码网站宅男_久久激情东京热全国久久久免费看_国产福利片精品日本韩国不卡视频_久久久精品456亚洲影院_日韩欧美在线综合网_欧美日韩久久精品亚洲 成全动漫视频在线观看免费高清_亚洲国产精品无码中文字_亚洲成人一区二区_四川机械亚洲无码_人人叉人人爽日美黄色视频_日本少妇又色又爽又高潮_可以免费看的AV黄片_亚洲国产精品偷v拍久久_在线观看国产亚洲 免费看无码自慰一区二区_欧美综合一区欧美亚洲天堂网_在线成人免费视频网站导航_国产成人精品无码免费播放_亚洲色偷拍另类无码专区_中文字幕1在线欧美剧情中文字幕_中国成人中文视频免费播放_中文字幕精品一区二区三区_在线观看的黄片视频 欧美性性性性性色大片免费的_秋霞毛片网站桃子视频网站_欧美电影一区二区三区_成人丁香激情AV淘宝不卡_精品二区三区激情汇集亚洲成人四区_国产裸拍裸体视频在线观看_色欲av精品一区二区三区_亚洲日韩精品激情久久无码国产电影_国产精品无码av无码
    澄迈县 南部县 井冈山市 丹东市 高平市 赞皇县
    英山县 周宁县 余姚市 临漳县 德保县 神农架林区
    永城市 通化市 铁岭市 北京市 噶尔县 新丰县