LG Electronics is positioning robotic actuators — the joints that drive robots — as a next-generation growth engine, with the company nearing what could be its first major order from a global technology giant. Baek Seung-tae, head of LG Electronics' home appliance business, said Saturday that the company has developed actuators that are more efficient, lighter and cost-competitive than rival products, and it is preparing for mass production. LG is pursuing orders from several big technology companies.