I'm not sure if Huayuan Technical School and Huayuan Middle Technical School are the same school, but based on the recruitment brochures and the admission notices, they should be formal institutions. Especially Huayuan Vocational School, which is also a key national institution.
The admission notice also looks very formal, with a serial number on top, headed 'Approved by the East Guang Province Enrollment Office', stamped with the official seal of the East Guang Province College Entrance Examination Committee Office, the school's seal, and the affixed seal, even specifying that without the affixed seal of the enrollment office, the admission notice is invalid.
