Cov kev cai ntawm kev txheej:
1. Kev siv tshuab PVDcozaj duab xis kho kom zoo nkauj
2. Cotiv thaiv cov ntiv tes, tiv thaiv-zaj duab xis tiv thaiv dej thiab tiv thaiv fouling
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.
