Duronic sells more than 500 lines of consumer electricals, from wireless baby monitors to laser pointers — all designed and tested in Romford and manufactured by partners in China. Managing director Muhammed Islam, 32, founded the firm in 2005 and started exporting in 2014. It now sells via five international websites and online marketplaces such as Amazon. Exports, which are largely to Europe, hit £4.3m last year. The firm is targeting the booming middle classes of India and the Middle East for future growth.