Kev nkag siab zoo ntawm kev saib xyuas cov tsom iav hom
1. Thaum hnav thiab tshem cov tsom iav, thov tuav lub tuam tsev ob txhais tes, tshem tawm ntawm pem hauv ntej, thiab hnav thiab tshem cov iav nrog ib txhais tes, uas yuav yooj yim ua rau deformation thiab loosening.
2. Thaum tsis siv, qhwv lub lens daim ntaub nrog lub lens tig upwards thiab muab tso rau hauv ib lub hnab tshwj xeeb los tiv thaiv lub lens thiab thav duab los ntawm khawb los ntawm cov khoom tawv.
3. Yog hais tias lub thav duab los yog lo ntsiab muag muaj cov plua plav, hws, roj, tshuaj pleev ib ce, thiab lwm yam, thov ntxuav nws nrog ib tug nruab nrab detergent thiab dej sov, thiab ces qhuav nws nrog ib tug mos ntaub.
4. Nws yog txwv tsis pub ntub dej rau lub sijhawm ntev, lossis muab tso rau hauv qhov chaw ruaj khov kom raug tshav ntuj; Nws yog txwv tsis pub muab tso rau ntawm ib sab ntawm cov hluav taws xob tam sim no thiab hlau rau lub sijhawm ntev.
5. Thaum kaw daim iav, thov khi daim iav sab laug ko taw ua ntej.
6. Lub spectacle thav duab yog distorted thiab sagging, thiab thaum nws yog siv dua, lub clarity ntawm lub lens yuav raug cuam tshuam. Thov mus rau lub khw muag khoom kom hloov kho dawb.
7. Cov ntawv looj tsom iav dub tuaj yeem deformed me ntsis tom qab siv rau lub sijhawm. Qhov no yog ib txwm tshwm sim. Koj tuaj yeem mus rau tom khw muag khoom kom kho tus ncej.
8.Thov tsis txhob tso daim iav photochromic nyob rau hauv qhov chaw ntawm lub hnub ci ncaj qha rau lub sijhawm ntev, txwv tsis pub lub sijhawm siv cov nyhuv photochromic yuav luv.