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What color thread is the handmade high-speed rail made of?
Transparent color.

The fishing line has good toughness, transparent color, good concealment and beautiful appearance.

Handwork is a Chinese vocabulary, and the pinyin is sh ǒ ug not ng, which means that it is not mass production of machinery and equipment, but manual production. In the early stage of industrialization, handicraft industry once became synonymous with low productivity and uneven quality.