The electric rolling shutter door is suitable for commercial facade, garage, factory, mining enterprise and other public places or residential buildings. Especially the door opening is large, which is inconvenient to install the ground door body, which plays a role of convenient and quick opening. So how to distinguish the quality of electric rolling shutter door? Here's your introduction:

1、电动卷帘门等级按防破坏时间长短、板材厚度等指标。新标准对防盗等级划分，将防盗级别调整为“甲”、“乙”、“丙”、“丁”4级，甲的级别较高，依此递减。电动卷帘门的防破坏时间也是逐级递减的，较低的丁级为少6分钟。

1. The grade of electric rolling shutter door is based on the anti damage time and plate thickness. According to the new standard, the anti-theft security level is adjusted to "a", "B", "C" and "d". The level of a is higher, and it will decrease accordingly. The anti damage time of electric rolling shutter door is also decreasing step by step, and the lower grade D is at least 6 minutes.

2、电动卷帘门的门扇，门扇的钢质板材厚度。甲、乙、丙、丁级分别应达到2毫米、2毫米、1.8毫米和1.5毫米。钢板的厚度直接关系到电动卷帘门防盗性能。好的钢质电动卷帘门骨架中有石棉等具有防火、保温、隔音功能等填充材料。

2. The thickness of steel plate of electric rolling shutter door. Class A, B, C and D should reach 2 mm, 2 mm, 1.8 mm and 1.5 mm respectively. The thickness of steel plate is directly related to the security performance of electric rolling shutter door. Good steel electric rolling shutter door frame has asbestos and other filling materials with fire prevention, thermal insulation and sound insulation functions.

3、电动卷帘门标记。新标准还增加了可以帮助消费者识别电动卷帘门真伪的内容，就是要求电动卷帘门应有固定标记。电动卷帘门标记共由3部分组成，标记符号为拼音字母，从左到右分别为防盗门代号（fam）、防盗级别和企业自定义特征（包括企业代号和产品代号两部分）。其中，防盗级别标记固定在内侧铰链边上角距地面高度160厘米左右的位置上。而“金属门”、“钢制门”、“进户门”等均不是电动卷帘门，提醒消费者在采购电动卷帘门的时候要仔细辨别。

3. Electric roller shutter door marking. The new standard also adds the content that can help consumers identify the authenticity of the electric rolling shutter door, which requires that the electric rolling shutter door should have fixed marks. The mark of electric rolling shutter door is composed of three parts. The mark symbol is pinyin letter. From left to right, it is the code of anti-theft safety door (FAM), anti-theft security level and enterprise self-defined characteristics (including enterprise code and product code). Among them, the anti-theft security level mark is fixed on the position about 160 cm above the ground on the inner hinge edge. And "metal door", "steel door", "door into the door" are not electric rolling shutter door, remind consumers to carefully identify when purchasing electric rolling shutter door.

4、观察电动卷帘门的结构是否精密，润滑程度好坏，好的电动卷帘门散热比较，采用全齿轮转动，无链条、无皮带，进而增强了卷帘门机芯整体寿命。

4. Observe whether the structure of the electric rolling shutter door is precise, the lubrication degree is good or not, and a good heat dissipation comparison of the electric rolling shutter door adopts full gear rotation, no chain and no belt, thus enhancing the overall life of the rolling shutter door movement.

5、电动卷帘门锁具。电动卷帘门有自锁、防撬的功能。按新标准规定，电动卷帘门的锁具应能在防破坏时间内，即使钻掉锁芯、撬断锁体连接件从而拆卸锁具或通过上下间隙伸进撬扒工具，松开锁舌等，也无法打开门扇；门框与门扇间的锁闭点，按照防盗级别甲、乙、丙、丁应分别不少于12个、10个、8个和6个；电动卷帘门主锁舌伸出有效长度应不小于16毫米，并应有电动卷帘门锁舌止动装置。

5. Electric rolling shutter door lock. The electric rolling shutter door has the function of self-locking and anti prying. According to the new standard, the lock of electric rolling shutter door shall be able to open the door even if the lock core is drilled out, the lock body connector is broken to remove the lock, or the prying tool is extended through the upper and lower clearance, and the locking tongue is released. According to the anti-theft security level a, B, C and D, the locking points between the door frame and the door leaf shall not be less than 12, 10, 8 and 6 respectively The effective length of the main locking tongue of the movable rolling shutter door shall not be less than 16 mm, and the locking device of the electric rolling shutter door latch shall be provided.

6、购买时还应注意“防盗门”的“FAM”标志、企业名称、执行标准等内容，符合标准的门才能既又可靠。

6. Pay attention to the "fam" sign, enterprise name, executive standard and other contents of the "anti-theft safety door" when purchasing, so that the door meeting the standard can be both safe and reliable.