1949

“Teck Heng Yoo Drugstore” expanded production to a factory in Bangkok’s Soi Lang Suan, with
modern machines introduced to support an increase in production.For the company’s registration, the company  name was changed to Osotspa 
"Teck Heng Yoo" Company Limited on 23 May 1949. 

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OSOTSPA PUBLIC COMPANY LIMITED

348 Ramkhamhaeng Rd., Huamak, Bangkapi, Bangkok 10240 Thailand.