Tunnel zaj duab xis tsev cog khoom, multi span zaj duab xis tsev cog khoom, iav tsev cog khoom tswj lub thawv.Muaj ntau yam hloov hauv lub txee tswj los tswj cov txheej txheem shading sab nraud, sab hauv shading system, ntub ntaub thaiv cua txias system, sab hauv micro-tso system, hydroponic system, thiab lwm yam .
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