... originated from England . In a long time, it was for British royal family and nobles use only.It now is now recognized as the ... , Russia, Thailand.Bone China Maintence:1. For oil stain on surface, you can wash it with warm washing water , below 80 degrees ... use a little vinegar ,then wash it, no detergent.2.For scratches on surface, you can polished it with toothpaste. 3.Please be ...