KP Tin was born in his homeplace in Dabu, Guangdong in 1919. His family ran food & grocery stores and a kiln. He studied at his hometown when small. When in Junior Secondary 2, he quitted school and took over his family's businesses due to the passing of his father. In wartime, he went into trade in Vietnam and Indonesia. After peace was restored, he threw himself into the industrial field by setting up Tjhauw Loen Rubber Factory in Jakarta, and switched to plastic manufacturing in the mid 1950s. In 1958 his whole family migrated to Hong Kong, and bought lands for reclamation in Tuen Mun in the following year. He set up Thian's Plastic Industrial Company and became the first supplier of PVC films in Hong Kong. In 1968, he opened one more factory that also made synthetic leather in Ping Shan. Since the 1960s, he had built many factory plants, facilitating the development of the plastic processing industry in Hong Kong. In the mid 1970s, he started letting his eldest son, Tin Hing Sin, take over the family's businesses. In 1982, he set up Tin Ka Ping Foundation with a devotion to education-centered charity.