Our company was established in the 80s of last century.We are professional manufacturer of video door phones,for several years,we have formed our complete system on the R&D,produce and marketing.Till now we have got great achievements in our home market,we will also have a good future in foreign market,absolutely!Any details you can come to our websites:www.aumet.net and www.xinsanwei.net,or you can write to us.We will be very pleased to hear from you.