Yog koj mus rau kev lag luam wholesale, phais ophthalmic fundus lub koob yees duab hauv hauv Xov Tshoj los ntawm ib qho ntawm cov koob yees duab fundus rau cov kws ua haujlwm ntawm cov kws ua haujlwm thiab lwm tus neeg? Txais tos saib cov nqi nrog peb.