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