U.S. bans the sale and import of some tech from Chinese companies Huawei and ZTEWASHINGTON — The U.S. is banning the sale of communications equipment made by Chinese companies Huawei and ZTE and restricting the use of some China-made video surveillance systems, citing an "unacceptable risk" to national security.The five-member Federal Communications Commission said Friday it has voted unanimously to adopt new rules that will block the importation or sale of certain technology products that pose security risks to U.S. critical infrastructure.Along with Huawei and ZTE, the order affects products made by companies such as Hikvision and Dahua, makers of widely used video surveillance cameras.And no new Dahua, Hikvision, or Hytera gear can be approved unless they assure the FCC that their gear won't be used for public safety, security of government facilities, & other national security purposes."Hikvision said in a statement that its video products "present no security threat" to the U.S. but the FCC's decision "will do a great deal to make it more harmful and more expensive for US small businesses, local authorities, school districts, and individual consumers to protect themselves, their homes, businesses and property.""