Twenty First Testing & Services Pvt. Ltd.

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India · H.No.878, Ayudhay,12th Ward, Near Siddipriya Kalyana Mantapa, Kalyananagar, Hosapete - 583201, Vijayanagara Dist., Karnataka, India

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National Accreditation Board for Certification Bodies (NABCB) · IB 147

ISO/IEC 17020:2012 · Inspection body type A · inayofanya kazi · India

Imekaguliwa: 10/10/2026