A级防火膜， A级防火膜厂家 A级防火膜安装 A级防火膜施工 A级防火膜优点有哪些 A级防火膜价格 南京A级防火膜 南京A级防火膜 南京A级防火膜供应
软膜天花不合格伪劣产品的识别方法：现在市场上有一部分利益熏心的小企业小作坊用不合格的产品以低价格当诱饵引诱客户上当受骗冒充合格的产品，有下列所述特征之一的为不合格产品或伪劣产品：
1.无国家防火建筑材料质量检验监督中心出具的b级防火检测报告(近期的)或检测报告没有在国家防火建材网上公布的。
2.膜材料用火燃烧没有在2-3秒内停止燃烧并发出很刺鼻的味道。
3.手摸稍微有黏着感和静电感或较硬较软，此材料易吸灰尘，膜材料两月内就会变色,在夏季容易下垂冬季容易收缩,稳定性较差使用寿命短。
4.用力撕扯膜材时很容易把膜材撕断,在有框架的膜样上用拇指用力压下膜材不能在4-10秒中缓慢恢复原状或迅速恢复后留有挤压痕迹.
5.把膜材样品放在鼻下嗅时稍微会有一种刺鼻的原油味道,含有易挥发的有害重金属物质;
6.配套铝合金结构比较细小或铝料手摸易脱色，折弯时表面有裂纹出现。
7.考察工厂时场地较小作坊式生产或在居民楼内办公,只有3-5个人各种角色都扮演,安装后后期维护没有保障.
8.洽谈时业务员老和您讲他是某知名公司的亲戚或原来在某公司工作过，产品质量和某知名公司的产品质量一样等说词。
Methods of identifying disqualified and shoddy decorative film products: nowadays, some profit-pursuing small enterprises and workshops sell disqualified products as qualified ones at low price to lure the customers. Disqualified and shoddy decorative film products have one of the following characteristics: 1. There is no Class-B fireproof test report (recent) issued by the National Fireproof Construction Materials Quality Supervision and Test Center or the test report is not announced on National Fireproof Construction Materials Network. 2. If the film material is burned, it does not stop burning in 2-3 seconds and there is very pungent smell. 3. Film materials are adhesive, electrostatic, too hard or too soft and easy to absorb dust. They discolor within two months, sag in summer and shrink in winter, with low stability and short life. 4. They are easily torn. If you press the film material with framework with your thumb, the material cannot recover in 4-10 seconds or it recovers quickly with traces of pressing. 5. Samples of film materials have pungent smell of crude oil and harmful volatile heavy metals. 6. Supporting aluminum alloy structure is thin or aluminum material fades easily with hand touch. There are cracks when it is bent. 7. The factory is small and is located in residential buildings with only 3-5 workers. Maintenance after installation cannot be guaranteed. 8. While negotiating, the salesman keeps saying that he is a relative of a well-known company’s official, or that he used to work in a famous company, or that quality of his products is the same as that of a well-known company, etc.