After Kwong Kwok Hung left the Public Works Department, he opened an electronic component factory jointly with his siblings in the hope of making a fortune by working hard to develop his own business. At the time, the electronics industry was at its prime, many radio manufactures were set up in San Po Kong. The factory was opened by his elder sister’s husband who was a merchandiser of an electronics factory. Kwong Kwok Hung and his younger brother were responsible for operation of the factory. They purchasing two die cutting machines and set up a workshop at home. They took orders from radio manufacturers and hired mold makers to produce the molds according to product drawings from clients. When the molds were done, they produced with the die cutting machines. The product price depended on the order size: the greater the order, the lower the die-making cost and the lower the unit price. The electronic component factory continued to expand in scale, so the Kwong brothers rented two factory flats with a total area of several thousand square feet. A large labour force was not needed, they only had to hire workers who had the skills to adjust the molds and operate the die cutting machines. Kwong Kwok Hung guided the workers on work safety.