With a broad smile, Rawono Sosrodimulyo displayed his latest product: a rice cooker. Set to be marketed next year, it can prevent rice from getting stale for 24 hours. It has been patented," he told Tempo in his office in Kebon Jeruk, West Jakarta. This is to support people's lifestyles. There are other products, too."

Rawono is especially proud of one of those devices, the double-lock gas regulator. In a typical single-lock system, the mouth of th