I discovered LTS almost 4 years ago and even posted about it on this website, without referencing their name. I found a sub $200 DVR (unheard of at that time) that had a fantastic user interface and just plain worked. I had direct imported several different DVR's in previous years from Korea, Taiwan and China and had had very mixed results with their reliability, tech support and ease of use. LTS offered a US based presence with stocked inventory which eliminated long lead times and wire transfers.
Not being content, I dug further to see if I could eliminate the middle man and found that their DVR's were made by TVT Digital out of GuangDong. I made an appointment to meet with their CEO at the next ISC West to discuss buying direct. He was very hesitant as he informed me that LTS purchased about $2 million US per month from them, well beyond any order I was pondering. I continued to purchase through LTS for my analog needs and have been very pleased with the price/performance of their equipment. I'm pretty sure some of the Qsee (sp?) line are from TVT as well. The "Super Live and Super Cam mobile phone apps are also their products.
A little over a year ago, LTS began pushing their "Platinum" line of products that were both analog and IP and featured a 3 year warranty. Turned out these products were from HIK. They seem to be pushing the HIK line more extensively now. The cameras are excellent, but I'm not as crazy about their NVR and CMS compared to TVT.
Interestingly, another VMS company, Video Insight also relabels some of the same HIK IP cameras under their Advidia line.