???? Stay Informed – Important Update for Refined Zinc Manufacturers! The BIS Notification for Refined Zinc under the Refined Zinc QCO 2025 is now live! Issued by the Ministry of Mines in consultation with BIS, this mandatory Quality Control Order requires that all refined zinc products bear the ISI mark and conform to IS 209:2024 This QCO for refined zinc will come into effect six m... https://www.bl-india.com/notifications/isi-bis-certification/bis-qco-2025-for-refined-zinc