Links T.O. Chemicals (1979) CO., LTD. http://www.togroupthailand.com/index.php/en/ S. Charoen Bhaesaj Trading Co.,Ltd. http://www.scharoen.com KHAOLAOR LABORATORIES CO.,LTD. http://www.khaolaor.com PML Pharmaceuticals Co.,Ltd. http://www.pharmalandgroup.com