Product Overview Manufactured by Dongguang Hengfu Roll Forming Machine Co., Ltd. The YX21‑164‑820 roll forming production line is a high‑speed, heavy‑duty automatic solution for manufacturing premium trapezoidal metal roof panels. Engineered by Dongguang Hengfu Roll Forming Machine Co., Ltd., it realizes a complete automatic production process from coil decoiling, material guiding and roll forming to fixed‑length shearing and finished panel output. Designed for real