... . Internal porosity scanning test7. Leakage test for parts involved with oil or water passage Huzhou Anda Auto Parts Co., Ltd. specializes ... shanghai Volkswagen since 1991 ,we mainly supply valve bushingbracket of oil-filter assembly, front seal flange. In recent years ,we ... VW in China.ChangChun,and mainly supplied valve bushing, bracket oil-filter assembly for vehicle-types of Golf, Jetta, and Bora ...