About NISHIMURA MASAKI
About gas permeability
About waterproof sheet
About property
About bonding and joining
About repair
About polyethylene
About final disposal site
About radioactive waste
About decontaminated waste
About gas permeability
About liner sheet
About water shut-off property
About final disposal facility of waste
About repair
About Construction materials
About Organic materials
About インフラ
About 防災
About ガス透過性
About 防水シート
About 補修
About 開発