进出口含钙元素类商品归类化验关键点分析

进出口含钙元素类商品的归类需要结合元素、物相成分、工艺过程,物理指标等多项指标进行分析。重质碳酸钙、沉淀碳酸钙和改性碳酸钙商品的外观和成分通常无明显差异,硝酸铵钙类商品在进出口税则中没有相关描述,此类商品的准确归类是归类难点。本文对碳酸钙、硝酸钙盐、硝酸铵钙商品的归类化验关键点进行探讨,便于精准化验、准确归类。

The Analysis of Key Points of Imports and Exports of Calcium-Containing Commodities Classification Tests

The classification of imports and exports of calcium-containing commodities have to be analyzed in combination with multiple indicators such as elements, phase components,process, and physical indicators. The appearance and composition of heavy calcium carbonate, precipitated calcium carbonate and modified calcium carbonate products are usually not significantly different. Calcium ammonium nitrate products are not described in the customs tariff, so the accurate classification of such products is difficult to classify. This paper mainly discusses the key points of the classification and testing of calcium carbonate, calcium nitrate and calcium ammonium nitrate to facilitate accurate testing and accurate classification.