Method for identifying the quality of stone display stands
In advance,only the quality of the stone display rack is discussed here,not including the aesthetic appearance of the display rack. There are several important factors to be considered in the quality evaluation of stone display racks,including: materials,production techniques,and strength of display rack manufacturers. There are usually three kinds of materials for stone display racks: MDF,acrylic and steel.Each material has its own advantages and disadvantages,and it needs to be determined according to the customer’s requirements and the special display method of the stone display sample. MDF identification:Firstly,the amount of formaldehyde released,the density board is divided into E1 grade and E2 grade according to the formaldehyde emission amount,and the formaldehyde emission amount exceeds 30mg/100g unqualified.Secondly,the color.A little yellow is better,blackened defective,the higher the hardness,the better of stone display rack,the MDF on the mark...