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Guogangtong (tom qab no hu ua "GGT") nqus microbial tus neeg sawv cev rau kev tiv thaiv ib puag ncig, ib yam ntawm cov kab mob aerobic, yog cov tshuaj ntsev-ua siab ntev thiab kub-kub Bacillus microorganisms pom, muab rho tawm thiab incubated nyob rau hauv ntuj ntshiab ib puag ncig, nrog rau cov nrhiav tau thiab muab tau los ntawm tej chaw.