Who has fermentation technology details of pig bed? Can give a?
谁有发酵床养猪技术的详细资料? 能给传一份 么 ?
Prepare 3 to 5 million pigs can raise for fermentation bed much pig? Need more area?
准备3到5万办发酵床养猪能养多少头猪? 需要多大面积?
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