Class 19 Building materials (non-metallic); non-metallic rigid pipes for building; asphalt, pitch and bitumen;non-metallic transportable buildings; monuments, not of metal.是什么意思_Class 19 Building materials (non-metallic); non-metallic rigid pipes for building; asphalt, pitch and bitumen;non-metallic transportable buildings; monuments, not of metal.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句