Zhengzhou Sunrise Refractory Co., Ltd. always adheres to the highest quality standards to ensure that our products are competitive in the global market. All products are certified by ISO9001 international quality system and use advanced production equipment and strict quality inspection methods. The refractoriness of major products such as fused AZS and glass kiln bottom bricks is not less than 1700℃. Our internal quality inspection team conducts multiple quality controls, covering raw material selection, production process monitoring, finished product factory inspection and other links to ensure that each batch of products meets or even exceeds customer requirements.