This is manufactory to produce real efficient electric ultrasonic rodents & pests repeller from china. br br What we have, br 5 years’ experience to research & design & produce & sell electric ultrasonic rodents & pests repeller, br more than one year to finish one hot-selling product we have on hand now, br CE,RoHS,FCC,ISO-9001. br technical cooperation & support from college. br br What we want to do, br one life do one thing,care all the people’s health with no rodents & pests. br br If you have interest,let’s talk about more details,one free sample for your test. br You can send mail to penny@hifi-change.com to know more.