Meichi mainly makes wooden windows. Kemeiling, including Lycra and LG are all imported plastic-steel profiles. A relatively high-end brand. LG is a little cheaper. A complete window, first of all, is good material, workmanship is also important, plastic-steel profiles are only a part of a window, as well as accessories, glass, sealant and so on are all conditions to be considered. I am selling a domestic brand of hardware accessories, not a particularly professional answer, I hope I can help you.