We can provide you the realiable quality and best price truck parts to maintance your after market service for Longking. Our main product:
- cabin assy and cabin accessory; Headlamp, taillamp, bumper, front cover, door and glass;
- chassis parts; sun gear, brake pad, clutch plate, Bearing, differential, PTO, and axle;
- transmission parts; transmission shaft, universal joint, steering pump, clutch booster and brake pedal;
- Engine Parts; cylinder liner, piston, piston ring, oil seal, connection rod bearing, starter, injection pump, oil pump, water pump, air filter, oil filter and fuel filter;
- other spare parts. Curtain, roof, water tank, radiator, inter cooler and ect.
Lonking Parts,Lonking Spare Parts,Lonking Excavator Parts,Lonking Construction Machinery Parts Jinan JF Co., Ltd , https://www.jfsinotruk.com
The vault door is divided into four levels, which are M level, A level, B level, and C level. The performance represented by different levels is also different.
M level: This is the worst of the four levels, its plate thickness is 7MM, the lock is the use of domestic mechanical locks with double locks, due to the existence of defects in the thickness of the steel plate, can not reach the * Department of the test, so many Enterprises do not produce this level.
Grade A: Grade A is the most widely used grade. It has a plate thickness of 8mm. The lock adopts a domestic fine mechanical lock with a double head lock. The price is low and the performance is very high. It is the most cost-effective level.
Class B: Class B vault door is even better, it has a plate thickness of 10MM, the lock is very safe and reliable with the United States Shajin lock with a domestic shackles, like jewelry stores, museums are usually used this level of doors.
Grade C and Grade C are the highest. They are composed of 12mm thick steel plate and American sand gold locks and shackles. The fire resistance is up to 4 hours, and the anti-riot capability is also 2 hours. The application of this level of doors in the bank is compared. Big. 
In fact, the purchase of the vault doors is also relatively simple, and consumers can only purchase high-quality products with some understanding of the products.
Nowadays, the application scope of the vault door is also becoming wider and wider. It can be used from banks to museums, gold stores, and villas. This is better for the majority of consumers and it will help us do a good job of protection. For the performance of the product we should be more understanding, but for the product's material, protection level and other aspects of the do not understand when it is easy to fall into the trap of some manufacturers, then we should choose how to distinguish the quality of the product ?