"Specialty yarns including high twist, low twist, untwisted, high tenacity, vortex spun, anti-twist, and bamboo yarns. Offering fine cotton (BCI), organic cotton (GOTS, OCS), recycled cotton, polyester (GRS), African cotton, and Pima cotton yarns along with certifications. Hard-to-find yarns, we have them in stock."

Henan QiangNian (Wei Shu He Sheng) Product Hotline: 13903781186, Mr. Liu

Dark spots

Reasons for the Issue: 1. Inadequate cleaning of fabric oil during pretreatment, resulting in darker coloration at the oil-stained areas during dyeing. 2. Excessive foam in the dye bath.

Excessive, the mixture of foam, knitted sweaters with flowers, and dyes stains the fabric. ③ Defoamer oiling causes dark oil spots. ④ Dye

Tar-like substances stick to the fabric. ⑤Dyes aggregate into dark spots under various conditions. ⑥Water quality calcium and magnesium ions

Due to excessive bonding with dyes or adhering to fabric for other reasons.

Processing Methods: ① Add degreaser during pretreatment for refining. ② Use low-foam or foam-free auxiliaries for dyeing. ③ Foam elimination

Select varieties that are not prone to oil floating, add chelating agents to improve water quality, and use solubilizing dispersants to prevent dye aggregation. Timely cleaning of the tank.

The tank is being cleaned and sanitized.

"High twisted yarn, low twisted yarn, untwisted yarn, high tenacity yarn,涡流纺yarn, anti-twist yarn, bamboo yarn, and other "specialized, refined, unique, and innovative" yarn varieties. Offering fine cotton (BCI), organic cotton (GOTS, OCS), recycled cotton, polyester (GRS), African cotton, Pima cotton, American cotton yarns, and certificates. Hard-to-find yarns, we have stock available."

Henan QiangNian (Weixian Hesheng) Product Hotline: 13903781186, Mr. Liu