Espionage suspicions and criminal charges have been buzzing around Huawei Technologies Co. Ltd., which threatens to hamper the Chinese telecom giant’s plans to be a worldwide player in 5G wireless technology. 

And so it was noteworthy, and perhaps a bit unsurprising, when Huawei deputy chairman Ken Hu stood before an audience gathered Tuesday in Brussels and made a pitch for transparency and trust by calling on governments, regulators and other stakeholders to collaborate and create common cybersecurity standards.