It's outer casing is made of highstrengthaluminiumalloy, and treated by a special process. It's optical part is full coated.
外壳用高强度铝合金制造并经特殊处理，光学零件全镀膜。
2
The main components are using highstrengthaluminiumalloy. The whole machine is convenient, firm, low noise. It is easily to be transported.
整机主要构件采用：高强度铝合金制成，轻便，牢固，噪音小，重量轻，便以运输。
3
The Speedy Rail beam is a heat-treated aluminiumalloy profile with hollow cross-sections that give it highstrength under torsion and deflection stresses.