Michigan and California have passed laws to outlaw cage confinement of hens, and Ohio's governor announced his support for a moratorium on the construction of any new cage layer facilities.
密歇根和加利福尼亚均通过法案禁止使用幽闭母鸡的鸡笼，俄亥俄州长曾宣布支持暂停修建新的笼养鸡舍。
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Hoist with cage, forming double support structure of the star wheel, can withstand strong shock.