纺织品 - 聚酯工业纱 - 规范 Textiles-Polyester Industrial Yarn-Specification
出版:Bureau of Indian Standards
专家解读视频
纺织品 - 聚酯工业纱 - 规范 Textiles-Polyester Industrial Yarn-Specification
出版:Bureau of Indian Standards
专家解读视频