一、引擎盖隔热棉（也叫汽车隔音棉），它最主要是吸收引擎运转时的噪音，并且还有隔热功能，能有效保护引擎盖原厂烤漆，避免长时间高温使得烤漆变色。
二、汽车底盘隔音材料，车厢内中央底盘、后车厢底盘的制震消音垫及防潮隔音棉，最主要的功能是处理中央底盘、行李厢下的底盘，在高速行驶时钣件震动共鸣，及由轮胎传入底盘的路面噪音，和排气声导入后箱的共鸣音压。（加底盘装甲更佳）
三、车门检修仓内外专用减震隔音板，加强门板钢性，降低行车时，车门钣金因较薄产生的共振，造成门内饰钣与零件松动，或是因车龄老旧，而长期在崎岖路面行驶下，因金属疲劳与车身扭动而生成的杂音；同时加贴门饰板内隔音棉，有效吸收助波，提高音响喇叭的音色质量。
四、引擎挡火墙隔音、仪表座下层加强消音垫。引擎是最主要的噪音源，也是离驾驶人最近的噪音源，在加强仪表板下部的材质与引擎防火墙厚度后，能抑制引擎转速拉高时传入车室内的高频音压，是隔音工程中效果最明显的部位。
五、车门隔音条，汽车消音海绵条最主要的是加强车门和车门框的密封，有效减低车子高速行驶的风切声，也能替换老旧及弹性疲乏的防水胶条，最主要是让车厢内的气密性更佳。
六、前后轮弧及叶子板隔音，这里是底盘噪音最常传入的地方，行驶时避振器所导入之异音，与抑制轮胎与路面及碎石与钣件所生成的撞击杂音，施工后能明显降低因路面与避震器所引起之噪音，这项重点施工部位的价格也较高，不过得到的效果应是很明显的。
First, the hood insulation cotton (also called car noise insulation cotton), it is mainly the absorption of engine noise, and also has the heat insulation function, can effectively protect the engine cover original paint, to avoid prolonged high temperature makes the paint discoloration.
Second, the sound insulation material of the vehicle chassis, the shock absorber pad and the moisture-proof and soundproof cotton in the central chassis of the compartment and the rear compartment chassis. The main function is to handle the chassis under the central chassis and the chassis under the luggage compartment, and vibrate and vibrate at high speeds. The road noise from the tires to the chassis, and the resonance sound pressure of the exhaust sound into the back box. (better with chassis armor)
3. Special shock-absorbing and sound-insulating panels inside and outside the inspection door of the vehicle door to strengthen the door steel and reduce the resonance of the door sheet metal due to thinness when the vehicle is running, causing the door trim and parts to loosen, or being old due to age, and long-term In rough roads, noise generated due to metal fatigue and twisting of the vehicle body; at the same time, the sound-insulating cotton in the door trim panel is added to effectively absorb the wave and improve the sound quality of the sound speaker.
Fourth, the engine fire wall noise, instrumentation, lower silencer pad. The engine is the main source of noise, and it is also the noise source closest to the driver. After strengthening the thickness of the lower material of the dashboard and the thickness of the engine firewall, it can suppress the high-frequency sound pressure that is transmitted into the interior of the vehicle when the engine speed increases. It is an insulation project. The most obvious part of the effect.
Fifth, the door noise strips, car silencer sponge strip is the most important thing is to strengthen the seal of the doors and door frames, effectively reduce the high-speed driving wind chopped car, but also to replace the old and elastic fatigue waterproof plastic strips, the most important is to make cars The airtightness inside is better.
6. Front and rear wheel arcs and fender insulation, this is the place where the chassis noise is most often introduced, the noise introduced by the shock absorbers during driving, and the noise generated by the tires and the road surface and the rubble and rubbing parts are suppressed. After that, the noise caused by the road surface and the shock absorbers can be significantly reduced. The price of this key construction site is also high, but the effect obtained should be obvious.
