Input-output norms require imported inputs to match those used in exported Direct Black XN, ensuring export compliance.

Input-output norms for Direct Black XN (Duranol Black XN) set prescribed input proportions and list constituent chemicals and permitted quantities per unit of finished product. Importers must ensure imported inputs correspond to those used in the exported product and adhere to administrative determinations of allowable input proportions; the item's listing has been suspended by public notice.

---

---

---