As for the products, paraffin type. . There are different resin binding type. Strength test is a tensile machine. I didn't heard about line density. The strength and the single fiber diameter is binded by impregnating compound with its requirements is very low. It seems that the national standard single fiber tex is fine. The content of impregnating compound has a relationship with yarn. Yarns with different impregnating compound have different requirements. In general, twistless yarn has no relatinship with line density.
A universal tester and a muffle furnace is needed. glass culture dish is needed. One over ten-thousand balance Yarn metroscope. 2,One over ten thousand balance, blast stove, water content detection, oil (impregnating compound content).
