1. Good sealing performance should pick hinges, slides, locks. Opening and closing of the purchase, pulling a few feel their flexibility and convenience.

2. Flexibility should be able to choose a good locks. When you purchase can plug several key sequence does not look smooth, switch tighten up if the province strength.

3. Selected types of decorative appearance and good performance hardware. When you purchase mainly to see whether the appearance of defects, how plating gloss, feel is smooth and so on.