Maybe we all need some tender loving carebots. Having spent more than $3 billion on industrial robots in 2015 alone, China’s already the world’s largest producer. Now it’s looking to service-oriented robots, starting with the elderly care industry. With rapidly growing ranks of retirees — 25 percent of the world’s seniors — China’s nursing homes struggle with high labor costs and low profitability. Several dozen facilities are now testing robots that monitor residents’ health, help them stay in touch with family, and simply keep them company.