Mr. Lieng TengAmnuay as a grocery store. Fifteen years later, Mr. Kian TengAmnuay (Mr. Lieng's son) started pharmaceutical sales business by turning the grocery partly into drugstore. In 1956, the business: - Ouiheng Consumer Co.,Ltd. - Greater Pharma Ltd. Part. - Greater Poly Manufacturing Co.,Ltd. - Grand Poly Industry Co.,Ltd. - Grand Interprint Co.,Ltd.