Null Theory and null Drawtube 10-80X (160X) Gem Microscope Buyer and Importer

Dear sir, I am dealing the devices, equipment for gem lab since 1988. I am looking for stereo zoom type microscope, which will be used in diamond certification lab. The light bulb in the microscope should be 35Watt. I want to know simultaneously how many types' microscope you are under manufacturing. Plz let me know if I can check the quality in ShuiBei in Shenzhen, if you'd have an office. Thx, HA KingStar in HKrtification lab. The light bulb in the microscope should be 35Watt. I want to know simultaneously how many types' microscope you are under manufacturing. Plz let me know if I can check the quality in ShuiBei in Shenzhen, if you'd have an office. Thx, HA KingStar in HK Show More