dfo spray latent fingerprint development

...; if the result is unsatisfactory, improve it with ninhydrin. Description Store the prepared DFO solution in a pressurized aluminum spray. Press the nozzle, and the solution sprays in a mist form. The solution can remain effective after long-term storage....

... electronic lock, card, password, fingerprint function independent lock, suitable for wooden, metal or glass cabinets, there is also a locker control system. At present, our company has developed many advanced smart cabinet locks, Bluetooth + card lock,...