Quote against the process, not the catalogue
The same grade that runs clean on a pipe line can speck a thin film. We start from your resin, your equipment and the standard you have to meet, then work back to a formulation.
About
A masterbatch supplier that starts with your resin
Yeyuan is a China-based supplier of carbon black masterbatch for the plastics processing industry. We work with film, pipe, molding, cable and non-woven producers who need the black to behave the same way on every container.
What we actually do
Carbon black masterbatch looks like a commodity: black pellets, sold by the tonne, largely interchangeable on paper. In production it is not. The carrier decides compatibility with your resin. The black grade decides jetness and UV protection. The dispersion decides whether you get pinholes at 15 microns, filament breaks on a non-woven line, or a surface that passes inspection.
Our job is to line those three variables up with your process and then keep them fixed. That means recommending a grade for the application rather than the highest-margin one, and freezing the inputs once an order is running.
Where we sit in the chain
We supply compounders, converters and brand owners directly. Orders range from a trial quantity on a single line to repeating container loads, with packaging and documentation set up for export — 25 kg bags on pallets, or 500 / 1000 kg jumbo bags, with COA, TDS and MSDS issued per shipment.
What we are not
We are not a trading desk that forwards your inquiry to whichever mill quotes lowest that week. The grade you qualify stays the grade you get, and the person answering your technical question is the person who specified it.
How we work
Four rules we do not bend
Say when a cheaper grade is enough
Not every application needs high jetness. If N660 meets the UV requirement, recommending N220 only raises your cost and our margin looks better for one order and worse for the next ten.
Document what shipped
Batch numbers on the COA and on the bag. If something goes wrong later, we can trace it to a production run instead of arguing about a photo.
Answer in one business day
Inquiries that sit for a week tell you something about a supplier. We would rather reply fast with a partial answer than slowly with a perfect one.
Start with the application, not the price list
Send the resin and the process. We will come back with a grade and the trade-offs.