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| 棉絮状短纤蚕丝：性状如棉花，短絮，无粘着力。是把一般蚕丝下脚料用专门机器打制成片的。 |
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| 块状柞蚕丝：连接板块状，是把北方柞蚕丝用酸碱性化学药剂进行褪色处理制成的。不仅容易结块，而且，对人体健康具有相当的危害。 |
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| 普通桑蚕丝：中长丝、白灰色。由于加工粗糙有黄斑结块、黑点。手感粗糙、有灰尘感。 |
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| 特级桑蚕丝：长丝、白色带微黄。加工精细、无黄斑、结块、黑点。手感细嫩、滑爽、无灰尘。 |
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| knowledge－–different silk grade |
1. flocculence short filament silk: looked like cotton, short, without pitchy force. using the odd material and specific machine to product
2. massive silk: connected by massive and disposed by north acid and alkali chemical. they are not only easy to agglomerate but also harmful to human body.
3. common silk: medium long, white-grey. since roughly processing, when touched, it’s rough and dusty as well as be covered with yellow spot agglomerates and the sunspot.
4. high quality silk: longest, white with micro yellow, be delicate smooth and clean. attentive process, without any flaw which the former mentioned |
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