This article uses the case of Oppel Electric Manufacturing Co. Ltd.—the most important Chinese manufacturer of light bulbs before 1937—to explore the early development of the Chinese electrical lamp industry. The article first explores the Chinese market for electrical lamps before the 1920s and shows how the market was dominated by imports and lamps locally manufactured by foreign firms. It then traces how Oppel was established in the 1920s and subsequently grew into a successful manufacturing business able to compete with foreign products. The article explores how the fact that government institutions were major purchasers of light bulbs allowed Oppel to engage in nationalist lobbying and thereby win government contracts. The article shows how the absence of Western-style intellectual property rights allowed Oppel to transfer technology cheaply, efficiently, and without needing to enter into Sino–foreign joint ventures. These discussions of nationalist lobbying and China’s intellectual property environment contribute to our understanding of China’s early industrialization, both in terms of the rapid industrial growth early twentieth century China saw and the leading role that Chinese firms played in this growth.