Programmable Mechanical Timer Switch TB-35 educe household expenditure: Save costs on electricity and extend the life of your appliances. Use for lights, coffee machines, cell phone chargers, hydroponics, heat, A/C, and other electronics.
Helical double-rotor flow meter is a kind of new positive displacement flow meter in the world at present, in which a pair of helical double rotors with special tooth shape is used in the measuring part. It is provided with remarkable characteristics such