Tsim los ntawm 1998, Chunwang yog tus paub zoo tias yog ib qho ntawm cov ua lag luam thiab cov muag khoom ntawm silica gel desiccant hauv Suav teb. Lub sijhawm ob xyoos dhau los, peb tau qhia cov cuab yeej siv siab tshaj plaws thiab thev naus laus zis rau hauv peb lub Hoobkas. Thov kom dawb mus yuav peb pheej yig silica gel desiccant ua nyob rau hauv Suav teb.

Xa kev nug