الوصف

T-card holders used for safety & security purposes when working inside the confined spaces (onboard the vessels) in the shipyards.
we need according to safety requirements the T-card holders for keeping the T-cards when going inside the vessel or when going inside the confined space.
T-card holders are placed usually at the access of the vessel or the confined space.
used to know how many person are actually existed inside the vessel or the confined space.