China’s smartphone and electronics supply chain is adapting its expertise to support the country’s fledgling but fast-growing humanoid robotics industry, as component suppliers seek new growth beyond a slowing mobile market. The sector received a glimpse of that crossover after Honor’s humanoid robot D1, a dark-horse entrant from the smartphone maker, won Beijing’s recent robot half-marathon, beating established Chinese robotics names such as Unitree. Honor entered the humanoid robotics sector...