Tresexellent improvement Services Limited is affiliated and registered with BQSR Quality Assurance Pvt Ltd certification body accredited by IAS (International Accreditation Service) to certify companies to ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, ISO 22000:2018 standards among others after successfully meeting respective requirements as regards standards of choice. Tresexellent Improvement Services Limited is BQSR Quality Assurance Pvt. Ltd country representative in Nigeria and issued Business Association Partner Authorization Letter/Certificate. Also, Lead Auditor and Internal Auditor Training's etc on ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, ISO 22000:2018 standards are now fully certified by ASCB and IRQAO (Accreditation Service for Certifying Bodies and International Register of Quality Assessed Organisations).