Slabs, bark and coarse chips have different handling and size-reduction implications.
Cassia Bark for Extraction Programs
Extraction buyers generally value botanical identity, usable bark composition, target chemistry and lot consistency more than retail appearance.

What buyers should define first
State the analytes and methods relevant to the extraction process.
Confirm Cinnamomum cassia and exclude unintended plant material through an agreed verification plan.
Raw-material format
Large bark pieces may suit buyers with their own milling; coarse chips can reduce pre-processing work.
Analytical alignment
Volatile oil, moisture, identity and contaminants may be relevant, but the actual plan must follow the buyer’s process and market.
Lot and document control
Link the approved sample, specification, production lot, test report and shipment documents to the same commercial order.
Questions buyers ask
Which cassia form should I sample first?
Choose the form that best matches the actual processing or presentation need, then provide a target specification or reference product.
What information is needed for a quotation?
Product form, intended use, target specification, volume, packaging, destination, Incoterm, required certification and test expectations.
Does a website certificate guarantee this project is covered?
No. Current applicability is reviewed for the named product, certified activity, lot and destination before confirmation.