So is Zyxel (software not hardware), so is Juniper at the NSA’s behest and Huawei thinks (FT.com paywall) the USA ditched them because there are no US-backdoors in Huawei products.
Not that I condone anyone’s backdoors, but I don’t think it is as easy as China bad, USA good (or Europe for that matter, see e.g. British GCHQ hacks into Belgacom (German))