1、 Surface erosion phenomenon of stone plastic elevator door jambs: Touch the surface of stone plastic elevator door jambs with your hand. If it is a rough surface, the stone plastic elevator door jambs may be caused by acid erosion, affecting their service life and aesthetics.

二、白華或晶化：檢查是否為白華，在填縫處或石塑電梯門(mén)套表面一些白色粉末，很容易用手清除。

2、 White Hua or Crystallization: Check if it is white Hua. There is some white powder on the surface of the filling joint or stone plastic elevator door cover, which is easy to remove by hand.

三、石塑電梯門(mén)套表面全面性黃化：全面性黃化沒(méi)有區(qū)域性，可能是使用之表面處理劑黃變后所產(chǎn)生。

3、 Comprehensive yellowing on the surface of stone plastic elevator door jambs: Comprehensive yellowing is not regional and may be caused by the yellowing of the surface treatment agent used.

四、石塑電梯門(mén)套水斑：石塑電梯門(mén)套表面有顏色加深現(xiàn)象，檢查是否為水斑，可先用清水濕潤(rùn)石材表面，使用廣用試紙，測(cè)其PH值，若是堿性(廣用試紙呈藍(lán)色)，表示為水斑，若不是，則有可能是油脂污染。若是堿性水斑污染，則即使使用瓦斯噴槍加熱表面，也很難烘干。若只是一般水分滲透所造成的，很容易干燥消失。

4、 Stone plastic elevator door cover water stains: There is a color deepening phenomenon on the surface of the stone plastic elevator door cover. To check if it is a water stain, wet the stone surface with clean water first, use a universal test paper to measure its pH value. If it is alkaline (the universal test paper is blue), it indicates a water stain. If it is not, it may be contaminated by grease. If alkaline water stains are contaminated, even if a gas spray gun is used to heat the surface, it is difficult to dry. If it is only caused by general water infiltration, it is easy to dry and disappear.

電梯門(mén)套材料中越來(lái)越多的承包商都開(kāi)始選用這種材料來(lái)做電梯套工程，但是對(duì)于剛剛接觸石塑電梯門(mén)套的客戶(hù)來(lái)說(shuō)，并不清楚怎樣區(qū)分手里的石塑電梯門(mén)套質(zhì)量是否合格達(dá)標(biāo)。有了以上了解，在采購(gòu)線(xiàn)時(shí)，相信大家就能夠?qū)θ绾伪鎰e仿大理石電梯門(mén)套線(xiàn)的質(zhì)感有了一定的把我。

More and more contractors are choosing this material for elevator door covers, but for customers who have just come into contact with stone plastic elevator door covers, it is not clear how to distinguish whether the quality of the stone plastic elevator door covers in the product meets the standards. With the above understanding, I believe everyone will have a certain understanding of how to distinguish the texture of imitation marble elevator door cover lines when purchasing.