This series is improved basis on th LM55 inwards & tilting-in open window, finish the parallel siliding & opening function while preserving the advantages of LM55, congregate the space saving for sliding window and airproof for swing window, meet the high living quality requirement, sultable for villa, hotel, chamber etc. top grade buildings.

1. Diathermanous coefficient K=2.70W/m2. K
2. Excellent EPDM gasket tri-seled, the whole window own the airproof, waterproof, sound isolation, thermal isolation performance.
3. Waterspout optimized design, seeper drain convenient.
4. imported hardarware, convenient and flexible operation.
5. link accessories special design, insure the enough connection intensity.
6. Choose the special installation fittings, that more convenient and high precision. Hardware & accessories: imported "S"
7. Glazing bead is easy to install, and got various choose o the appearance.