Racks brand [Rongshida] Merchants buy racks usually pay attention to what place? Buy racks usually see seven main places: hanging rod thickness, hanging rod material, dry surface of the rod, wire rope, pulley, hand, expansion screws. ???? See hanging rod thickness: buy lift racks pole is not the thicker the better, but moderate. Thick pole, shake it up too much, are not suitable for lifting. Pole to moderate thickness 1.0 to 1.2mm thickness is relatively appropriate. ???? See hanging rod material: currently available are stainless steel, aluminum and magnesium alloys, Ti-Si-Mg alloy, consumers should identify the material, first pay attention to see businesses explanatory information, choose a reputable business, the second is the direct force pull the two ends of the rod, aluminum space tend to bend, can not be restored, aluminum space does not. ???? Look rod surface: Surface treatment mainly hanging rod polished, plating, spray treatment and electrophoresis. Electrophoresis processing the most complex, the rod surface is very bright, the best grade. The easiest polished, low-end products, this rod surface looks very bright, close to the primary aluminum, but did not make any surface oxidation treatment, long time, the surface will be black bars. ???? Look rope: a look at the thickness, two look pliability. The softer the better the more coarse rope, wire rope identification method is to fold, after release to see if restored. ???? See Pulley: Pulley ordinary metals and even iron, copper, and better use of copper compound pulley product quality. Look ???? hand control: hand is the core component of racks, is critical when buying direct hand rotation, a look is smooth, the sound will not be much. ???? Look expansion screws: expansion screws are often ignored consumers, which in fact decide whether the product is good, the installation is firmly joined racks please visit Rongshida page: http: //www.rsdlyj.com/join/zc/ Rongshida racks official website: http: //www.rsdlyj.com