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npub npub10awcuvsqafnegp0r220w3l4pw03mu3kcr3jera68wrsk285c2lyqfkhxkl
name とかか
about 高BOD排水の処理
picture https://image.nostr.build/1b8d642cdaf9b30f20d394ee07a671f682c32134bca0c5672046529c0b4db374.jpg