Cambodia on Wednesday sent its first batch of maids to work in Hong Kong, which is scrambling to meet growing demand for domestic helpers after a series of abuse scandals. Hong Kong is home to more than 300,000 foreign maids, mostly from the Philippines and Indonesia. But high-profile cases of abuse and forced labour have made headlines in recent years and threatened to stem the tide of migrant helpers. Hong Kong has turned to Cambodia, one of Asia’s poorest countries where the…