Mabapi le rona
Danyang Dayao Optical Co., Ltd.
Dayao Optical e thehiloe ka 2006 mme hajoale ke morekisi ea etelletseng pele oa lilense bakeng sa mefuta e meholo ea likhalase tsa letsatsi lefatšeng.Khamphani e ikemiselitse ho fana ka tharollo bakeng sa indasteri ea liaparo tsa mahlo.