Shanghai Total Industrial Co., Ltd.
electronic, electrical & industrial supplies- 1. test meters, measuring instruments- analyzers, police alcohol tester, moisture testers, humidity meter and psychrometers, ph meter, aquarium tester & equipment, dissolved oxygen meter, magnetic stirrer, ORP meter, water hardness tester, PH stick, EC stick meter, CF stick meter, PPM stick meter, Nutrient Truncheon, EC/PPM/CF ...