Since making a name for itself with abundant industry know-how and proficient capacity in window & door systems , the Yuil Light Metal Co. , Ltd. has been supplying to domesticated construction companies , focusing on machinelike ventilation louver systems through its ain R & D and production facilities . It manufactures dustproof nets and related specialty frames that can protect the living environment and the human body from knotty fine dust by blocking inflow , supplying them to government offices and secret facilities . It established a fresh paradigm in the furniture market by developing eco-friendly and reclaimable furniture made of 100 % aluminum able-bodied to compensate for the shortcomings of wooden furniture .