Cov kev cai ntawm kev txheej:
1. PVD txheej kho kom zoo nkauj zaj duab xis
2. Txheej tiv thaiv cov ntiv tes, tiv thaiv fouling thiab cov yeeb yaj kiab tsis muaj dej
Cov Ntsiab Lus Tseem Ceeb ntawm Zhenhua Program:
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Muab cov khoom siv txheej thiab kev txhawb nqa kev siv tshuab txheej rau cov chaw tsim khoom lag luam thiab cov neeg siv khoom.
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Muab cov kev daws teeb meem zoo, zoo, thiab pheej yig rau kev tsim kho tshiab tas mus li thiab kev loj hlob ntawm kev lag luam.
