US Trademark Classification US01 Chemicals 氧化镁（001-852） Class 01 氧化镁 001-852 Chinese 氧化镁 English Magnesium oxide Spanish Óxido de magnesio Term ID 001-852 Class 01 Type Goods Status Active · added, not since modified (A) Effective date 2004-07-20 Version 08-2002