萘是一种稠环芳香烃，是煤焦油中最丰富的成分，通常由蒸馏煤焦油和从焦炉煤气回收制得，由两个稠合的苯环构成。根据纯度不同，萘可分为工业萘、精萘和甲基萘，其中工业萘纯度较低，一般约为96%，工业萘经提纯脱除杂质及脱硫等工艺后得到高纯度的精萘。工业萘外观为白色或微红、微黄色片状结晶，有特殊臭味，易挥发、升华。

Naphthalene is a condensed aromatic hydrocarbon and the most abundant component in coal tar. It is usually produced by distilling coal tar and recovering it from coke oven gas, and consists of two condensed benzene rings. According to different purities, naphthalene can be divided into industrial naphthalene, refined naphthalene, and methyl naphthalene. Among them, industrial naphthalene has a lower purity, generally about 96%. Industrial naphthalene is purified to remove impurities and desulfurization processes to obtain high-purity refined naphthalene. Industrial naphthalene appears as white or slightly red, slightly yellow flaky crystals with a special odor, and is easily volatile and sublimated.

工业萘是重要的基础化工原料，主要用于生产减水剂、精萘、苯酐、萘酚、萘胺、2，6 － 二烷基萘、2，6－ 萘二甲酸、聚萘二甲酸乙二醇酯( PEN)和H 酸等化工产品，是生产合成纤维、合成树脂、增塑剂、橡胶防老剂、染料中间体、农药和医药等的原料。

Industrial naphthalene is an important basic chemical raw material, mainly used in the production of water reducing agents, refined naphthalene, phthalic anhydride, naphthol, naphthylamine, 2,6-dialkylnaphthalene, 2,6-naphthalenedioic acid, polyethylene naphthalate (PEN) and H-acid and other chemical products. It is a raw material for the production of synthetic fibers, synthetic resins, plasticizers, rubber anti-aging agents, dye intermediates, pesticides and pharmaceuticals.

近几年来，我国工业萘进口量远高于出口量。由于国内萘法苯酐产能不断增长，工业萘市场缺口较大，且国内工业萘市场价格偏高，工业萘出口量呈现出大幅下降态势。从进出口国家来看，我国工业萘主要从日本、韩国、澳大利亚等地区进口，其中日本是我国工业萘主要进口国家，进口占比接近九成。

In recent years, the import volume of industrial naphthalene in China has far exceeded the export volume. Due to the continuous growth of domestic naphthalene phthalic anhydride production capacity, there is a large gap in the industrial naphthalene market, and the domestic industrial naphthalene market price is relatively high, resulting in a significant decline in the export volume of industrial naphthalene. From the perspective of import and export countries, China's industrial naphthalene is mainly imported from regions such as Japan, South Korea, and Australia. Among them, Japan is the main importer of industrial naphthalene in China, accounting for nearly 90% of imports.

我国工业萘生产企业数量较多，在环保监管日益严格的背景下，部分工业萘落后产能逐步退出市场，短期内大量进口的局面尚无法改变。

There are a large number of industrial naphthalene production enterprises in China. Against the backdrop of increasingly strict environmental supervision, some outdated industrial naphthalene production capacity is gradually withdrawing from the market, and the situation of large-scale imports in the short term cannot be changed.

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