A Huawei Technologies unit is shipping new Chinese-made chips for surveillance cameras in a fresh sign the Chinese tech giant is finding ways around four years of U.S. export controls, two sources briefed on the unit’s efforts said. The shipments to surveillance camera manufacturers from the company’s HiSilicon chip design unit started this year, according to one of the sources, and a third source familiar with the industry supply chain. One of the sources briefed on the unit said at least some of the customers were Chinese. Huawei also unveiled new smartphones in recent weeks that use advanced chips, which...