Junan County Yanfei Building Material Factory is a professional manufacturer engaged in the produce and sales of all kinds of Firber Concrete Spacer, Concrete Cover Block. With high industrial technology and superior after-sales service, we have enjoyed great popularity among clients in the worldwide market. Our factory has been attaching great importance to quality and reputation. Our aim is to do our best to satisfy the needs of our customers. We always adhere to the operation principle…