■ Upper part of Soundproofing tunnel leakage prevention
■ Upper part of Soundproofing tunnel leakage prevention Certification exam
■ Easy-maintenance soundproof panel (all detachable)
■ Load Transfer Reduction Device
■ Example of installation using easy-maintenance full detachable soundproofing plate and load transfer reduction device
■ Ministry of National Defense 2016 Selected as a pilot product for new technology superior product in construction field