Le Dun Pharmaceutical Factory, a pioneer in ophthalmology in Japan, 1899 was established in Osaka, Japan, and 100 has been manufacturing eye drops for more than years. 1909, letv produced the first eye drops. after continuous improvement and development, letv has been the flagship product of OTC eye drops in the past few decades, with a market share as high as 40%. Letv's brand is equal to the well-known brand of eye drops in the hearts of Japanese people.

1988, Japan's Letun Pharmaceutical Factory acquired Mentholatum Company, with a total turnover of more than 650 million US dollars. & ltbr & gt's famous products are: ● Ophthalmology drugs: computer use, anti-allergy, middle-aged and elderly people, children, artificial tears, soft eye drops for contact with eyes, antibacterial multi-effect eye drops ● Sunscreen products ● Gastrointestinal drugs ● Skin/lip care products ● Others: pregnancy test products, contact eye drops.