The development of nano-meter and submicro-meter scale reference materials for particle sizing in different countries including United States, China, Europe, Japan etc were summarized.

• 摘要综述了包括美国、中国、欧洲、日本等国当前在亚微米和纳米级粒度标准物质的研制和生产状况，以及相应的商业信息和来源。