The registration address of hebei-ya oak management ltd. Is the zhango-ho-ook plastics base in zhang jie county, hebei province. The registration authority is the city market supervision authority, represented by the legal person goni, and includes the production, sale and sale of high-pressure tubes, low-pressure tubes, metal hoses, seals, connections, tetrafluoride tubes, compensatoryrs** (projects subject to approval by law and subject to authorization by the relevant authorities)