The iron Can for Shaving Foam in the Toilet/Rest Room is easily rotten as always touched with water so often. This can be avoided with using Polycarbonate Cylinder as Pressure containers. 면도기 거품 깡통을 플라스틱으로 만들 수 있어요!, 압력이 들어 있는 모든 용기를 누드 플라스틱으로 만들 것입니다. This kind of principle applies to all kinds of Pressure Containers in the World. Acccordingly all kinds of fire extinguishers in the world, even spray types as well as normal fire extinguishers in iron-clad or aluminum/stainless steel can be replaced with my Nude Polycarbonate Plastic Cylinders with much lower expenses/cost/production costs and lighter weights than any other materials in the world.쇠/알미뉴/스텐레스등으로 된 소화기를 비롯한 여러가지의 압력이 들어가 있는 통(모기약,헤어무스,부탄가스통)등을 속이 훤히 들여자 보이는 유리같은 폴리카보네이트 플라스틱으로 만들 수 있어요, 누드 통으로!!! Read less