竹内里纱大战黑人582_专干A片_干一夜综合_一区二区看黄片_强伦轩一二三区区别_久久孕妇新片子_少妇高潮7777777丫乄_欧美日韩在线视频不卡一区_很很干2017_jizzjizz中国精品麻豆

  • Home
  • About Us
  • Product display
  • Application Example
  • News
  • Factory Display
  • Contact Us
  • 0086-536-3521951
    Shandong Hengyuan Lvfeng Agriculture and Animal Husbandry Technology Co. LTD. 0086-536-3521951

    Multi-layer ventilation window

    Contact us +
    Home/Product display/Farming equipment/Multi-layer ventilation window

    Product Introduction

    It is made of PVC plastic steel material. It has advantages such as high strength, high toughness, anti-aging, no deformation at high temperature and low temperature, and long service life.

    Gravity self-vertical opening, close tight, flexible opening and closing, quiet and reliable opening and closing, no disturbance to the livestock and poultry.

    The height of products can be adjusted by splicing the modules.


  • Previous: Light covering hood
  • Next: Automatic opening side-wall ventilation widow