Domestic handset manufacturer Lava International has appointed Navin Chawla and Gaurav Nigam as COO and product head respectively. Chawla will lead the company’s sales and service operations and also oversee the retail promotion functions. He has also been given the task to create a robust distribution model for the company. Meanwhile, Nigam, who had so far been leading Lava’s customer service team, will now head the company’s product function division. Prior to this, Nigam worked with Bharti Airtel in various senior management roles.