ʻO ka ʻeke biogas digester i hana ʻia me ka PVC ʻulaʻula ʻulaʻula flexible lole, a hoʻohana nui ʻia no ka fermentation a me ka mālama ʻana i ka biogas a me nā ʻōpala ʻoihana, etc.
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carina@cdfhcl.com
