国产女人18毛片水,成人免费淫片免费观看,日韩精品久久不卡中文字幕,美女一级毛片直播,欧美综合色区,国产精品久久久久aaaa,亚洲日韩精品欧美一区二区

After several months of hard work, the R & D team of Pratt & Whitney agricultural and Animal Husbandry Machinery Co., Ltd. has finally developed a Pratt & Whitney cage duck which is superior to the common breeding mode in the market!
The characteristics of captive duck are as follows:
1. Intensive cultivation, increase the number of ducks per unit area and reduce the artificial cost;
2. Large scale breeding, raising efficiency, raising index and raising European index;
3. Automatic breeding, three-layer cage, automatic defecation, water line feeding, environmental control equipment automation;
4. Harmless culture, reduce disease and improve culture environment
5. Pratt & Whitney duck cage, anti running duck, anti stringing duck, automatic fecal cleaning, easy to get out of the duck!
Pratt & Whitney farm and animal husbandry cage duck, exclusive design, sweeping the market, welcome to test your breeding friends!