HS Classification between Flax Fibre and Made-Up Linen Goods
Classification between Chapter 53 flax and Chapter 63 made-up linen depends strictly on Section XI Note 7 edge finishing, sewing, and structural shape criteria.
Official Regain Allowance
Moisture Calculation
The official regain allowance is a regulatory humidity correction factor applied to dry flax yarn weights to establish commercial billing masses in Chinese spinning mills. Raw bast fibres absorb atmospheric water readily during storage, so transactions require a standardized moisture baseline to prevent buyers from paying for heavy water content instead of dry cellulose. This administrative multiplier defines the legal percentage added to oven dried masses during commercial weighing procedures at the mill exit gate.
Commercial contracts specify this exact numeric threshold before batches move to the weaving sheds or export containers.
Financial Boundary
Commercial transactions rely on this standardized factor to reconcile moisture variations between wet spinning rooms and dry export warehouses. Disputes arise when mill measurements diverge from buyer acceptance limits during final container stuffing. Exceeding the permitted water fraction results in immediate financial penalties or cargo rejection at the port terminal.
Mill operators maintain strict climate controls in conditioning chambers to ensure that yarn humidity matches the contractual percentage exactly before final weighing occurs.
Quality Protocol
Laboratory technicians determine dry mass by placing randomized yarn samples into forced air ovens until all retained moisture evaporates completely. Technicians then calculate the official regain allowance by applying the legal multiplier to the dry weight according to standardized testing protocols. This laboratory procedure separates true cellulose mass from absorbed atmospheric water before the bales receive their official quality stamp.
Independent inspection agencies audit these drying logs during routine mill certifications to verify compliance with national export standards.