Shenzhen LDrobot, a Chinese visual technology company whose shares doubled upon listing at the Hong Kong Stock Exchange last month, said Thursday it has signed long-time German standout soccer goalkeeper Marc ter Stegen as global brand ambassador for its Anthbot robotic lawn mower brand. The move, ahead of this summer’s World Cup games, was the second global sports-related brand ambassador signed by a Chinese business this month, underscoring the interest in Chinese companies to tap sports figures as they work to promote international sales amid relatively slow growth at home. Chinese sports brand Li-Ning announced a partnership with NBA Golden...