NEW DELHI — (AP) — Indian investigators have raided an Indian subsidiary of Chinese smartphone maker Oppo, accusing it of evading customs duties totaling 43.9 billion rupees ($551 million), the government said Wednesday. The Enforcement Directorate, India's financial crime investigation agency, said it sent a notice to the company seeking recovery of the money. Oppo India, a subsidiary of China’s Guangdong Oppo Mobile Telecommunications Corp. Ltd, is the second Chinese mobile company to be searched by the directorate this month. The actions underscore the tough scrutiny of Chinese companies following a Himalayan border standoff between the armies of the two…