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19007 barrier automatic products are offered for sale by suppliers on Alibaba.com, of which turnstiles accounts for 30%, traffic barriers accounts for 22%, and automatic door operators accounts for 1%. A wide variety of barrier automatic options are available to you, such as roadway, roadway safety and road safety.You can also choose from stainless steel, 304 stainless steel and iron barrier automatic,as well as from easily assembled barrier automatic