一、仿大理石电梯门套表面侵蚀现象：用手触摸仿大理石电梯门套表面，如果是粗糙面，仿大理石电梯门套可能是被酸侵蚀所造成的;可能发生碱性水斑后石材结晶粒剥离。
A, imitation marble elevator door surface erosion: touch imitation marble elevator door surface used in military, if it is a rough surface, imitation marble elevator door may by acid erosion caused by, after the occurrence of alkaline water spots stone crystallization grain debonding.
二、白华或晶化：检查是否为白华，在填缝处或仿大理石电梯门套表面一些白色粉末，很容易用手清除。

Second, Bai Hua or crystallization: check whether the Bai Hua, in filling or imitation marble elevator door surface some white powder, easily by hand to remove.

三、仿大理石电梯门套水斑：仿大理石电梯门套表面有颜色加深现象，检查是否为水斑，可先用清水湿润石材表面，使用广用试纸，测其PH值，若是碱性(广用试纸呈蓝色)，表示为水斑，若不是，则有可能是油脂污染。若是碱性水斑污染，则即使使用瓦斯喷枪加热表面，也很难烘干。若只是一般水分渗透所造成的，很容易干燥消失。
Three, imitation marble elevator door water spots: imitation marble elevator door surface with color deepened phenomenon, check whether the water spots, first with water and moist stone surface, using wide strip, measure the pH value, if the alkaline (wide strip is blue), said water spots, if not, there may be oil pollution. If the alkaline water spot pollution, even if the use of gas spray gun heating surface, it is difficult to dry. If it is caused by the infiltration of the general water, it is easy to dry disappear.
四、仿大理石电梯门套表面全面性黄化：全面性黄化没有区域性，可能是使用之表面处理剂黄变后所产生。
Four, imitation marble elevator door all the surface of the Yellow: yellow no regional, may is using the surface treatment agent Huang bianhou generated.
五、仿大理石电梯门套表面局部黄化：局部且集中、浓度有深浅，此种现象有数属锈黄。
Five, imitation marble elevator Mentao: local local surface yellowing and concentration, concentration depth, this phenomenon belongs to several yellow rust.
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This article is contributed by the elevator door friendship. More knowledge about please click: attitude of http://www.jnhaohui.com most sincere. For you to provide the most comprehensive services. More relevant knowledge and we will continue to everyone dedication. Stay tuned.