1、 Identify whether the factory name, address and trademark are true

如今的石塑電梯門套市場上，有的生產廠家，有的則是倒貨的小公司，因此只有自己有工廠，有資質的廠家才是正規的，生產的石塑電梯門套產品質量才有保障。

In today's stone plastic elevator door pocket market, some manufacturers and some small companies pour goods. Therefore, only qualified manufacturers with their own factories are regular, and the quality of stone plastic elevator door pocket products can be guaranteed.

二、表面光滑程度。

2、 Surface smoothness.

石塑電梯門套表面應平整干凈、無毛刺溝痕或者劃痕。無透膠現象，板面無局部發黃、發黑等情況的出現。

The surface of stone plastic elevator door pocket shall be flat and clean without burr, groove mark or scratch. There is no glue penetration, and there is no local yellowing or blackening on the board surface.

三、分辨膜紙質量。

3、 Distinguish the quality of film paper.

一般情況下正規廠家采用的石塑電梯門套膜紙都是帶有UV漆的，紋理圖案有規則，防劃耐磨，耐腐蝕，而質量差，不達標的石塑電梯門套，表面紋理圖案會無規則，變異性比較大。

In general, the stone plastic elevator door cover film paper adopted by regular manufacturers is with UV paint. The texture pattern is regular, scratch resistant, wear-resistant and corrosion-resistant. For the stone plastic elevator door cover with poor quality and environmental protection, the surface texture pattern will be irregular and have great variability.

四、無起泡、裂縫現象。

4、 No bubbles and cracks.

在選擇石塑電梯門套時仔細觀察，在膜紙與基材之間的附著度、基材內部各層之間不能有嚴重的起泡、裂紋的情況。

When selecting the stone plastic elevator door pocket, carefully observe the adhesion between the film paper and the substrate, and there shall be no serious blistering and crack between the layers inside the substrate.

五、無刺激性氣味。

5、 No pungent smell.

石塑電梯門套在選購時，可從氣味來判斷，如果沒有明顯的刺激性氣味，一般都是符合標準的。

When purchasing stone plastic elevator door pocket, it can be judged from the smell. If there is no obvious pungent smell, it generally meets the environmental protection standard.

六、注意原材料比例

6、 Pay attention to the proportion of raw materials

石塑電梯門套原材料比例是質量的根本保障，因此原材料也決定了石塑電梯門套的指標，這個可以根據廠家講解的鈣粉、pvc樹脂粉、化工小料的用量來判斷。

The proportion of raw materials of stone plastic elevator door pocket is the fundamental guarantee of quality, so the raw materials also determine the environmental protection index of stone plastic elevator door pocket. This can be judged according to the amount of calcium powder, PVC resin powder and chemical small materials explained by the manufacturer.