Sertifikatlar

Rongsheng Group has complete certificates, and the refractory material factory has established a complete quality inspection system, strictly in accordance with ISO9001 standards, and equipped with professional inspectors at all levels to conduct quality control of all employees and the entire process from raw materials, production, inspection, and all aspects to ensure good quality. Our products and services are of the highest standard. We have passed authoritative certification and can provide you with more protection.

Our Certificates List: