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Column Speakers use multiple speaker cones to create a slim line column offering excellent vertical sound dispersion with a long 'throw', but coverage is limited horizontally. Columns are often used for public address in airports, railway stations, lecture theatres, churches and other houses of worship. For more information about column speakers prices, please feel free to contact us!

orrugated guardrail posts are made of hot galvanized columns with the plate, and wooden post is used as columns. Shiteng post is the hot galvanized post. With the development of the technology, the shape of the column of the corrugated guardrail is also diversified. Normally the W - beam guardrail use round post

Waterproof active column speaker ●  Built-in 1M memory for audio source ●  Aluminum grille and housing,stainless and durable

The safety roller barrier adopts "one post with 4 columns", which can effectively prevent the car from passing the barrier and drive out of the road by strengthening the performance and installation of columns and guardrails. It's pioneering adopts a rotating structure, pillar the elastic and anti-collision rotation barrels on the post support,