IN and IW methods
Yellows to browns
Yellow GCN and G, Golden Yellow RK, Scarlet R, Olive Green MW, Brown GG and G, dyed by the standard IN pad-steam or IW pad-jig method, dyeing depth 2.6 to 4.5% owf.
Hongda Textile Dyes · Ningbo
Dye company, supplying textile dyes from Ningbo since 1992.
Hongda is a dye company with disperse, reactive, direct, acid, cationic and vat dyes under the Dragon names, made and shipped from Ningbo.
Samples and data sheets come straight from the team that makes the product.
39 shadesyellow to black, Indigo included
4 dyeing methodsIN · IW · IK · special SR
ISO 9001 · 14001certified group
30+ countriesserved since 1992
Product brochure
Vat dyes across the shade card, by dyeing method and hue.
The Dragonthrene brochure lists every shade on cotton, with C.I. Vat number where it applies, dyeing depth in % owf, the dyeing method (IN, IW, IK or a special SR grade), fastness to light (xenon), washing at 95°C, rubbing dry and wet, and hot pressing.
C.I. Vat Blue 1 and Blue 5
Indigo and vat blues
Indigo (C.I. Vat Blue 1) at up to 6.0% owf and Brome Indigo (Vat Blue 5), plus Blue RSN, Dark Blue BO and VB, and the sulphur vat blues RNX and GNX.
Up to 8.0% owf
Blacks
Vat Direct Black RB and DB, Black BBRN and Sulphur Vat Black CLG, the deepest shades in the card at up to 8.0% owf, fastness to washing 4 or better across the range.
Buying it right
What to check before you choose a dye company.
Choosing a dye company is a long relationship. A mill or distributor needs shade consistency lot after lot, documents that pass customs and a technical team that answers fast.
Hongda has shipped textile chemistry from Ningbo since 1992, under ISO 9001 and ISO 14001. Every Dragon brochure lists C.I. number, dyeing depth and fastness by shade.
The range runs from Dragonperse for polyester to Dragonthrene vat dyes with Indigo for denim. A distributor can carry one supplier for most of a textile customer's needs.
The partnership
What a Hongda partnership gives you.
Experience
Documentation, logistics and compliance are routine here after three decades of cross-border trade. Hongda exports to more than 30 countries and works with over 500 distributors worldwide, so the paperwork your market requires has most likely been solved here before.
Supply
You buy at origin, in the quantities a distributor needs to stay competitive in its market. Volume pricing, consolidated shipments and production planned around your forecast give you the economics to defend margin against any local reseller.
Support
Samples, datasheets and technical answers come straight from the team that makes the product. Formulation advice, matching against your current reference and follow-up after delivery are part of the partnership, included from the first order.
Product
Seven registered brands, from Dragon Dyes to Chemtech, all backed by Hongda's in-house R&D teams. Dyes, pigments, additives and functional chemicals come from the same group, so you can widen your catalogue while keeping a single supplier.
Questions
What buyers ask before the first order.
01Does Hongda carry indigo?
Yes. Indigo, C.I. Vat Blue 1, is part of the Dragonthrene vat range, next to Brome Indigo and 37 other vat shades.
02Where is the dye company based?
In Ningbo, Zhejiang, China, with the office in Ningbo Hi-Tech Park and the plant in the Ningbo Petrochemical Economic and Technological Development Zone.
03Which regions does Hongda ship dyes to?
More than 30 countries across South America, South and Southeast Asia, North America and Europe.
04How do I start working with Hongda's dye division?
Send the partner application on this page or write to info@hongda-chem.com with your market and the dye classes you sell.
Where it ships from
Made in Ningbo, shipped to the United States.
Hongda ships from Ningbo, China, to distributors in more than 30 countries, North America included. Samples, data sheets and documents for each order come from the team in Ningbo.
- Office
- 11th Floor, Office Park Building, 535 Qingshuiqiao Road, Ningbo Hi-Tech Park, Ningbo, Zhejiang Province 315040, China
- Plant
- 365 Beihai Road, Ningbo Petrochemical Economic and Technological Development Zone, Ningbo, Zhejiang Province, China
Strategic partners
Ready to represent Hongda in your market?
Write directly to the partner team, or send the short application. It reaches Hongda's partner team by email.
Textile Chemistry
Pigments & Colorants
Performance Additives
Functional Chemicals
info@hongda-chem.comOr call the group directly: +86 574 87907888