There are three levels of noise1. Class I (30 ~ 59db)It's tolerable, but it's uncomfortable. When it reaches 40dB, it begins to disturb sleep.2. Class II (60 ~ 89dB)The interference to the autonomic nervous system increases and the hearing is not clear. 85dB is the general requirement of hearing pro... READ MORE
Another function of sound insulation cotton is heat insulation, which can reduce the heat transmitted to the hood surface during engine operation. Vehicles equipped with sound insulation cotton for hood basically will not produce white fog in rainy days. In cloudy and rainy days and winter, due to t... READ MORE
Yes, if the attic access door is within the living space and can open directly into the attic. Whether in a hot or cold climate, the access door should be treated just like an outside entrance door; it must be insulated and weatherstripped. During cold and windy weather, heat loss and air leakage th... READ MORE
We have our own powder coating workshop which helps us guarantee good quality and on time delivery to all our customers . READ MORE
Qualified in annual review,and got the new SGS certification of ISO quality management system . Fengze carries out production management strictly accordance with certification requirements. READ MORE
All processes from raw materials to finished products are completed in our own factories . Fengze carries out production management strictly accordance with certification requirements which can provide customers with various performance test reports, being one of the enterprises certified with tec... READ MORE
How to open the Access panel or Access Door ，it is a common question of all the buyers.Mainly our Access panels and Access Doors are assembled with Push Catch ,Square Lock ,and Cam Locks .PUSH CATCH you can understadn from its name that just push and the lock will be open easily .Cam Lock --- We sup... READ MORE
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Use of elephant trunk lock1. Elephant trunk lock, also known as rebound buckle and rebound device, has small volume and powerful function. It is mostly used for opening and closing doors. The biggest feature is that after the elephant trunk lock is installed, there is no need to open the door with a... READ MORE
Recently added one partner for our laser cutting machine .The Crane is the integral part of the laser cutting machine . It will avoid scratches on the sheet metals whild moving . READ MORE
Non-fire Rated Plasterboard Access Panel with steel frame is our new main project . Currently we have already produced 200*200mm,300*300mm,350*350mm,450*450mm,550*550mm,600*300mm,600*600mm,1200*600mm.If you also interested in Steel Frame ,Plasterboard Door design ,please contact us ,size can be cu... READ MORE
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