Otu ụlọ ọrụ America mepụtara fiber fiber na 1938;N'oge Agha Ụwa nke Abụọ na 1940s, iko fiber mesikwuru composites e bu ụzọ jiri na ụlọ ọrụ agha (akụkụ tankị, ụgbọ elu ụlọ, ngwá agha shells, mgbo vests, wdg);Mgbe e mesịrị, na-aga n'ihu na mma nke ihe perfo ...
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