1.Product adopt high quality cold rolling steel sheet from shanghai baogang company, made by plate work production lines, strong,resist pressure and impact, not easy distortion.2.Adopt green environment powder from Akesu Nobel Great Wall company, no harm to people and surrounding environment, no poison and side-effect, no smell when use.3.Connection parts and support accessories resist grind and pressure, rigidity meet the bearing requirements.4. Hardware and other spare parts adopt special steel office furniture aqare parts from wangtong company, green resist grind, smooth surface, no sting in rim angle.5.Due its KD strcuture,the packing vol. is just 1/5 of common one.It is convenitent for transport.It¡¯s agreat save on freight fee and can make large quantity. 6. It designed for office staff as well as for family.easy to install.