Throughout BIG’s history, our commitment to quality has been unwavering. BIG is committed to quality in each and every step, from using only the highest quality materials and components, using the latest manufacturing know-how and machinery, employing the latest QC guidelines, to offering outstanding customer service.
Our commitment to quality has led us to establish:
1- The only accredited water heater testing laboratory in Iran
This laboratory is the only internationally recognized accredited laboratory in Iran
2- The only accredited boiler testing laboratory in Iran

BIG is not only committed to quality in its own product and services, however by developing many of the national standard on gas burning appliance BIG has taken step in order to ensure that all such good reaching the consumers meet these guidelines.

In order to help us meet our quality objective, BIG not only adopts mandatory standards, but also goes a step further and has received many voluntary certifications including:
1- ISIRI: Institute of Standards and Industrial Research Of Iran Product Conformity (mandatory)
2- ISO 9001: International Standards Organization - Quality Management Systems
3- ISO 14001: International Standards Organization - Environmental Management Systems
4- OHSAS 18000: Occupational Health and Safety
5- CE: EU Product Quality Conformity (mandatory for European markets)