1. A15
2. B50
3. C130
4. D200
 

1. BS EN124 Standard
2. ISO9001:2008 & SGS Certification
3. Burglarproof & Never rusted
4. Characteristic logo & various colors
5. Resistace to weak acid, weak base, salt and seawater
6.Temperature resistance from -40 to 80 degree
7. 30 years life span