The thickness of oxidized film is a principal factor which influences the pore-sealing and dyeing uniformity of aluminium products' surface.
氧化膜厚度是影响铝材表面封孔和着色均一性的主要因素。
Among the two methods, gel stain can create more colors, but only a small number of special dyes can be used here, and the dyeing uniformity is difficult to control, and the cost of equipment is high.
其中，凝胶染色法虽然可制造的颜色较多，但也只能使用少数特制的染料，而且染色均匀性较难控制，使用的设备价格很高。
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