HEYI is a company mainly foucus security alarm industry, with 15 years R&D experience.
We are more rigious in security alarm. There are kinds of alarm products. Alarm host, wireless and wired sensors, IP camera. Welcome come to us for a quotation.
You can send email to us , or contact our skype or whatsapp. We promise reply with 24 hours.
At the same time, you can visit us at alibaba: https://heyitech.en.alibaba.com