Every other compostable plastic begins with a resin purchase. Ours begins in a Thai field, with a farmer we can name.
Cassava grown by Thai smallholders, on land Thai Wah has worked alongside for over 75 years. Every order you place reaches back to them, because the chain never leaves the group.
That is not a sourcing note. It is the reason this material exists at all.
A root is where a thing starts and where it returns. Ours is grown in Thai soil, engineered to run on the machines you already own, and certified to break down into clean compost that feeds the ground again.
Starch is the easy part. Making it hold a seal and run at line speed is the engineering. Eighteen full-time researchers and three research institutes work on that problem, and ten grades came out of it.
Your pack is the part of the loop the world actually sees. Film, bags, trays, bowls, straws and moulded parts, carrying a mark that tells the person holding it exactly what it is and where it goes.
Put the mark on your pack.
It is how a shopper knows you chose this on purpose.
Certified to return to soil, and the process waste becomes biogas and biofertiliser that go back onto the farm. The loop closes on the person who started it.
The plant, the material and the people behind it, filmed at Thai Wah rather than assembled from stock.
Pioneering success in sustainable bioplasticsThis is the objection that kills most bioplastic trials, so we publish the answer instead of promising it. Every grade carries its barrel and die temperatures, and every one is built for conventional extrusion machinery. No new capital. No rebuilt process.
Most compostable packaging stops its story at the composter. Ours does not, because Thai Wah owns what happens next. Cassava becomes starch, starch becomes Roseco, Roseco becomes your pack, the pack becomes compost, and the process waste becomes biogas that powers the plant and biofertiliser that goes back onto the farm.
A closed loop inside one company, rather than a supply chain diagram with a hopeful arrow at the end.
Home and industrial composting, food contact, chemical safety and hazardous substances, each tested by an independent body. We will send you the certificate with its scope, because the scope is what your auditor asks for, not the logo.
We sit inside the bodies that set bioplastics standards in our two most demanding markets, which is how we see where the rules are going before they arrive.
The industry body for bioplastics in Thailand, working on national standards and adoption.
The Japanese body behind the GreenPla identification system, and the reference point for buyers in Japan.
Certified for home and garden composting, the harder of the two standards and the one shoppers ask about.
Scope: cassava baseThe German certification body, tested against EN 13432 for managed composting facilities.
Scope: biocompoundThe European mark licensed for use on certified compostable product, recognised across the EU.
Scope: biocompoundAn independent Austrian body reaching the same conclusion as DIN, tested through OWS.
Scope: biocompoundTested through Intertek against United States FDA requirements, with EU 10/2011 work through TUV.
Ask for the report covering your gradeRegistration, evaluation and authorisation of chemicals, the European chemical safety regime.
Scope: per gradeRestriction of hazardous substances, which matters for electronics and appliance packaging.
Scope: per gradeEach mark is shown from the certifying body's own licensed artwork. Ask us for the certificate number and scope before you print any of them on a pack.
There are billions of packs on shelves this morning, and almost every one of them was a decision somebody made. One converter changing one line moves more than a thousand shoppers ever could.
You do not have to change everything to start. One grade, one line, one product. We will help you run it, and the farmers, the researchers and the growers already in this are on your side from day one.
Then put the mark on your pack.
The badge for everyone who decided their packaging should have somewhere to go.
SUPPORT FARMERS · SUPPORT NATURE · SUPPORT PLANET
Ten grades, one for each process route, with the numbers a converter actually asks for. Every figure below is quoted from a published technical datasheet.
Our cassava base for compounders who formulate their own, and Bioboost, which dry blends straight into the extruder you already run so a trial costs you a shift rather than a capital request.
Roseco-Film for high barrier and clarity, Roseco-Flexi for everything else. Tough for stretch and carrier bags, stiff for thin gauge with body.
Containers, trays, bowls, cups, cutlery and lids, moulded or formed from sheet. For anything that arrives warm, the answer is Roseco-Heat.
Our heat tolerant line, rigid or film. Hot drinks, hot fill and anything that reaches the customer warm and has to hold its shape.
Our durable line, for consumer goods and household items that need conventional toughness with renewable content.
For the water's edge. Coastal kitchens, island resorts, ferries and aquaculture, where a package that escapes never reaches a compost heap. This is the line we are building next, and we are choosing who we build it with.
Tills into the field instead of being lifted, so it removes the labour and the plastic residue at once. From the company that has farmed this crop for 75 years.
Roseco-UltraOur durable line, for consumer goods that need conventional toughness with renewable content. When the brief calls for a certified compostable moulded part, that is Roseco-Rigid.
The feedstockOur cassava base is for compounders who formulate their own. Not a drop-in grade, and the one that carries home composting certification.
Different regulations, different buyers, same material platform.
Single-use plastic rules keep tightening, and a compostable pack is the one sustainability claim a shopper can see and understand while holding it.
Trays, bowls and lids in Roseco-Rigid, and in Roseco-Heat wherever the contents arrive warm, films and pouches across Roseco-Flexi, and Roseco-Film when the shopper needs to see the product.
Hotels, restaurants, quick service and catering feel single-use bans first and hardest, because the items are high volume, disposable, and handed directly to the guest with your name on them.
Straws that do not collapse in a cold drink, cutlery and cold cups in Roseco-Rigid, hot drinks and hot fill in Roseco-Heat, and finished Roseco Straw if you would rather buy than convert.
Extended producer responsibility and scope 3 reporting have arrived, and protective packaging is where appliance makers have almost no compostable option at all. A white goods carton is mostly air, film and foam.
Cushioning and protective film across the Roseco-Flexi range, component and accessory bags, and mailing bags. The tough grade is the one to start from, because it is the toughest film we make.
FoodFDA and EU 10/2011 food contact testing already done. Tell us the grade and the report comes back to you the same week.
HospitalityThree grades carry documented heat resistance, so hot drinks and hot fill are on the table. We run the trial with you on your own line.
AppliancesREACH and RoHS compliant, which is where most bio-materials fall out of an electronics tender before they start.
Sushi trays, soup bowls, straws, mulch film. Tell us the product and we name the grade, from the published datasheets.
Tell us what you are making and we will name the grade.
She knows every grade, names the right one for your job, and gets a sample moving. Tap a question.
PreciseEvery answer comes from a published Roseco datasheet or certificate, so the grade she names is the grade that will run.
FastShe narrows eleven grades to the right one in a couple of questions, then puts a sample and a specialist in front of you.
What our certified grades are built for. Disintegration in a managed facility, at controlled temperature and humidity.
Mulch film that tills straight into the field instead of being lifted, so growers save the retrieval labour and the soil stays clean. In field trials with growers in Japan and Korea, working toward EN 17033.
The harder of the two standards, and our cassava base carries it. Certified by DIN CERTCO for home and garden composting, so it returns to soil in an ordinary garden heap rather than needing an industrial facility. In laboratory testing the sample had fully disintegrated by day 70.
Roseco is the bioplastics platform of Thai Wah Public Company Limited, which has worked with cassava for over 75 years across 15 operations in five countries. That is why the chain runs from the farm gate to finished film without leaving the group.
It also means the material came out of a research programme rather than a trend. Eighteen full-time researchers, three research institutes, and an agri-biotech platform spanning biomass, bioplastics, bio-composites and biofertiliser, working from genomic sequencing at the feedstock end through to the finished film.
Tell us what you are making and we will come back with the grade, the evidence behind it, and a sample. Someone reads every one of these.
Thai Wah Tower I, 6th Floor, South Sathorn Road, Sathorn, Bangkok 10120, Thailand