... anti-bump 4.Over 10 years used life Model:industrial gate Material:Alloy-6063, 201# 304# stainless steel ... control distance ≤50m Max length 30mType of gilding track No track, Single track, Double trackPackaging Detail:Inside is bubble paper, ... 5days,20GP:10-18daysWidely useful for:Government, company, factory, industrial, mining enterprises, institutions, colleges, stadium and shopping center, ...