Catapult-type breaking child / ejection type broke births price / ejection type broken tire manufacturers aluminum breaking child manually breaking child-proof aluminum price car stop roadblocks breaking child manual car stop nail riot broke births Shanghai Shanghai broken tire public security department is dedicated riot car stop car stop nail stainless steel nails breaking child car stop manual car stop roadblocks nail prices 8M riot remote control car stop car stop roadblocks to prevent terrorism vehicle rolling tire is broken tire nail to prevent vehicles from entering illegally car stop car stop riot Product name: Manual staple broke births Zinc Alloy Product Size: Length 8m width 22cm Product Weight: 17KG Packing: iron box Material: Bearing material: Aluminum, lancet needles length 38mm Material: Hard-casting Zinc Alloy Features: The car stop roadblocks from aluminum strips bearing activities, rigid die-cast zinc needles triangular prism constitution. Aluminum strip made of steel rivets connected to the movable support can be freely opened, in use, after the completion of the work can be simple closed. Triangle needles with a central vent hole, each edge face to give up slots, and connected with the center hole. After pricking needles into the tire, the air inside the tire will be directly and quickly released from the vent hole in the center. When the wheels come into contact with a rigid aluminum die-cast zinc nail roadblock, because with the pressure, the wheel is pressed against the barricades on the needles triangle, triangle the needle will move with the direction of the vehicle on tire puncturing, and each chop ≥15 open / sec exhaust, tire pressure will make the needle and the separation barrier. The wheels continue to turn, so that the more the tire puncture needle prick deeper, tire gas escape begins with the needle bore. Usually there will be four to six nail piercing the tires in less than 20 seconds put all the gas release. To achieve the purpose of effectively blocking the vehicle. [Contact] please call Haier tough, we have a professional team, to serve you, to provide you with the best solution! ! ! Company: Haier Ren Industrial Co., Ltd. [Product Manager]: Miss Wu Yi 13,681,846,487 company qq: 1527116410 Company base: 021-57815616 company's official website: http: //www.qmshanghai.com Company Address: Shanghai Songjiang District Jiuting Sheng Long Road 768 broke births price / ejection type breaking child / resistance tires breaking child / rolling tire breaking child / ejection type car stop nail / bar births car stop nail / portable bar car nail / QM brand traffic safety broke births price / Transportation breaking child / deceleration broke births manufacturer / reducer facilities Monopoly / reducer design department / stainless steel reducer _ car stop breaking child / bar car breaking child / stop tire breaking child _ / breaking child / producer breaking child / Wholesale breaking child _? Beijing broke births? _ vehicle interception facilities broken tire tool traffic safety facilities? Shenzhen breaking child? Hebei breaking child _ Supply automatic breaking child / Transportation Equipment _ Shanghai remote control broke births / car stop roadblocks manufacturers / remote control broke births _ law enforcement special car stop roadblocks / Beijing Traffic Equipment / force dedicated breaking child / car stop roadblocks / production of special sales broke births _ _ resistor car stop car stop roadblocks nail _ _ _ remote control remote control broke births car stop nail _ _ remote control remote control car stop car stop roadblocks.