HONG KONG (REUTERS) - China baby-related products companies, such as Goodbaby International and Mengniu Dairy, were set to jump on Monday after Beijing relaxed its one-child policy.

Beijing said on Friday that it would allow millions of families to have two children, in the country's most significant liberalisation of its strict one-child policy in about three decades.

Shares of stroller maker and distributor Goodbaby International were set to open up 11.8 per cent, while dairy products maker Mengniu Dairy was set to climb 7.5 per cent.

The benchmark Hang Seng Index was set to open 1.6 per cent higher, while the Chinese Enterprise Index was set to open 2.7 per cent higher.