JH strictly control product quality from the source, throughout the research and development design, drawing review, process decomposition, raw material traceability, outsourcing audit, manufacturing self-inspection, processing research and quality inspection, etc.

manpower：31 people

measurement equipment: Hexagon CMM2.5D 

JH passed quality certification: ISO 9001, ISO 14001, ISO/TS 16949, UL/CE certification