Negative pressure ink supply system Secondary ink cartridge Two-way solenoid valve Three-way solenoid valve Positive pressure negative pressure plate card

6-channel 4-channel ink shortage alarm 8-channel temperature control board WFP-02A photo inkjet printer switching power supply WFP-03G photo inkjet printer switching power supply Single-channel heating and ink (solenoid valve) control board custom integrated ink system independent pressure Ink plate multi-channel negative pressure system negative pressure monitor dual-channel negative pressure system temperature control chip with intelligent control board for pressure reduction and ink absorption, etc.