Professional Thermostat OEM&ODM Manufacturer - Smart Home Climate Solution


SMT is very popular process for electronic products. Its high efficiency and high precision can help our devices to be more accurate and reliable.

E-Top has 3  SMT machines,(Panasonic and Juki) which assures 1.5million pieces/year capacity. Our room thermostat workshop located upstairs from us, which greatly reduces the vibration of the printed circuit board during transportation, and protects the stability of all components to the greatest extent.

AOI inspection is particularly important as a checkpoint of SMT, it can help us improve the yield rate of circuit boards to 99.8%.


For a room thermostat, DIP process is necessary for some bigger components that unable to be done by SMT, like relay, large capacitance, and terminals etc.
Workers plug in the components to correct position, then through wave soldering machines, that helps all the components fix to the PCB;
After cool down, remember to cut down the too long pins (foot of components) according to safety requirements.
Then 100% visual checking and function test on fixture before you can put them neatly on the PCBA rack, never stack the boards on top of each other, friction can cause damage between


We have 5 Nos Injection machines to meet the company's production requirements.

Before setup injection workshop, we received complaints such as thermostat hook broken, black dots, burrs, deformation. Since the establishment of our own injection molding workshop, the quality of our plastic parts has been greatly improved, mainly due to:

a.  The procurement of plastic raw materials well controlled and monitored from ourselves. We import plastic grains from Taiwan. All plastic cases are PC+ABS,UL94-5 fire resistance  

b.  The process can be effectively controlled, 100% use original raw materials without secondary materials.

c.  Thermostat tooling/mold can be effectively maintained.


Assemble line 

We have 2 assembly workshops and 10 assembly lines to meet the daily production capacity of 5000pcs. On production lines, we strictly require employees: 

a. Wear anti-static clothing and anti-static wristbands

b. Before assembly, the first piece of the product is checked by PQC to ensure product accuracy

c. Operate according to the work instructions above production line 

d. Distinction mark on defective product and good product

e. Take daily maintenance records