Nowadays many Chinese factories contacted me, I can get more than 10 emails marketing email everyday. I tried to get price from one of them, their price is much lower. Someday I placed a trial order to them, it’s a nightmare for me. After one month of the chamber was installed, my customer complained that the water is leaked, my service engineer repaired it well, few days later, my customer complained that the coontroller didn’t response, we have to change the controller. Then I backed to Labtek, happily their chamber is stable, and only few problems occured of all my purchases.