Longkingdom has a full set of imported production lines and testing equipment, and adopts ISO9001 quality assurance system to implement enterprise management. Longkingdom has formed a strong market competitiveness with its technical advantage, quality advantage, scale advantage and price advantage, and has become a certain scale of plug-in resistor production enterprise. The main products are: carbon film resistors, metal film resistors, metal oxide resistors, cement resistors, wirewound resistors, fuse resistors, high power resistors, chip resistors, etc.