GUIDELINES FOR USING CESA CLEAN ADDITIVES • Cesa Clean works best when molded maintaining normal (injection) pressure/shear • For best results, Avient recommends a “Running Color Change” which eliminates breaks in the molding cycle • Since the Cesa Clean concentrate will expand, it is recommended to reduce the shot size by 20% • It is designed for use at a let-down ratio (LDR) of 3.0% or (33:1); however, use rate can vary depending on the severity of the contamination but typically is 2.0–4.0% (a use rate higher than 6.0% may not have any positive affect on the cleaning performance) • Using Cesa Clean as a routine part of your color change rotation will allow faster changes and consume a minimal amount of raw material - Note: If the manifold is not cleaned routinely, this process may be more time consuming and additional material will be required • It is best to process at your normal polymer processing temperatures - For best performance, stock temperature should be at least 400°F - If 400°F is achieved during the purging process, no additional activation will occur during the reprocessing of regrind - All parts produced during the “Running Purge Cycle” should be captured as regrind, resulting in a scrap-free color change - If using sequential gates, open and close all gates at the same time while purging the tool - If contamination appears to be coming from one gate, open and close first, and for an extended period of time, to force more material through this location - When cleaning in this manner, pay close attention to shot size - Parts containing the previous or new color plus any Cesa Clean can be used as regrind INTRODUCING CESA CLEAN TO YOUR PROCESS Hand Blend • Hand weigh enough of the Cesa Clean and natural resin mix to equate to 3–5 times the barrel capacity • Use rate should be 3.0% or 33:1 for routine cleaning • For difficult-to-clean tooling, or tooling which is not routinely cleaned, start at 4.0% or 25:1 • Note: Do not attempt to vacuum load more than 15 feet from source as stratification/separation may occur Volumetric Feeder • Calibrate feeder to dispense 3.0% or 33:1 for routine cleaning • For difficult-to-clean tooling, or tooling which is not routinely cleaned, start at 4.0% or 25:1 • This style of feeder is highly recommended for at-the-throat metering of Cesa Clean Blending Units Most blenders have an extra bin for an additive • Fill the additive bin with Cesa Clean • Set blender to introduce the Cesa Clean at 2.0 to 4.0% • Note: Do not air convey any further than 15 feet as Cesa Clean has a high density and may separate from the mix.

Alleged claims, if any, do not affect Buyer’s obligation to pay for the conforming portion of the Products delivered. Buyer shall be obliged to accept the Products and pay the rate specified in the order confirmation for the quantity of Products delivered by Seller. Buyer’s failure to pay for the Products shall not constitute a force majeure event hereunder. 13.

Alleged claims, if any, do not affect Buyer’s obligation to pay for the conforming portion of the Products delivered. Buyer shall be obliged to accept the Products and pay the rate specified in the order confirmation for the quantity of Products delivered by Seller. Buyer’s failure to pay for the Products shall not constitute a force majeure event hereunder.

Alleged claims, if any, do not affect Buyer’s obligation to pay for the conforming portion of the Products delivered. and pay the rate specified in the order confirmation for the quantity of Products delivered by Seller. Buyer’s failure to pay for the Products shall not constitute a force majeure event hereunder. 13.

Alleged claims, if any, do not affect Buyer’s obligation to pay for the conforming portion of the Products delivered. Buyer shall be obliged to accept the Products and pay the rate specified in the order confirmation for the quantity of Products delivered by Seller. Buyer’s failure to pay for the Products shall not constitute a force majeure event hereunder. 13.

Alleged claims, if any, do not affect Buyer’s obligation to pay for the conforming portion of the Products delivered. Buyer shall be obliged to accept the Products and pay the rate specified in the order confirmation for the quantity of Products delivered by Seller. Buyer’s failure to pay for the Products shall not constitute a force majeure event hereunder. 13.

Buyer will reimburse Seller for all governmental, provincial, municipal, local or other taxes (other than income taxes), excises or charges, including superfund taxes and fees, which Seller must pay in connection with the manufacture and supply of the Product, but only those amounts not already included in the price at the commencement of this contract. 7. Either party may suspend performance hereunder (except to pay for the Product already received) in the event of: (1) acts of God, fire, explosion, flood, earthquake, storms, or other natural disasters; (2) strikes, lockouts or other industrial disturbances or riots; (3) war, declared or undeclared, or acts of terrorism; (4) compliance with any governmental, provincial, municipal or military law, regulation, order, or rule, foreign or domestic, including priority, rationing, allocation or preemption orders or regulations, or cancellation of Seller’s or Buyer’s license to operate its plant; (5) catastrophic failure of facilities used to manufacture the Product, interruption or shortage of transportation, labor, power, fuel or raw materials; (6) total or partial shutdown due to Seller’s plant turnaround resulting from Items (1)-(5) above; or (7) any other cause or causes of any kind or character reasonably outside the control of the party failing to perform, whether similar or dissimilar from the enumerated causes (a “force majeure”).

Alleged claims, if any, do not affect Buyer’s obligation to pay for the conforming portion of the Products delivered. Alleged claims, if any, do not affect Buyer’s obligation to pay for the conforming portion of the Products delivered. Vorbehaltlich Klausel ‎4.1 haftet der Verkäufer in keinem Fall für Schäden und/oder Kosten aufgrund von Lieferverzug. 9.5 Buyer shall be obliged to accept the Products and pay the rate specified in the order confirmation for the quantity of Products delivered by Seller.

We are continuing to invest in key end markets and innovation, and as this quarter has demonstrated, our investments in composites and sustainable solutions are paying off."

Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: the final amount of charges resulting from the planned North American asset realignment and the Company's ability to realize anticipated savings and operational benefits from the asset realignment; our ability to achieve the strategic and other objectives relating to the acquisition of Spartech Corporation, including any expected synergies; our ability to successfully integrate Spartech and achieve the expected results of the acquisition, including, without limitation, the acquisition being accretive; disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; the financial condition of our customers, including the ability of customers (especially those that may be highly leveraged and those with inadequate liquidity) to maintain their credit availability; the speed and extent of an economic recovery, including the recovery of the housing market; our ability to achieve new business gains; the effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; changes in polymer consumption growth rates where we conduct business; changes in global industry capacity or in the rate at which anticipated changes in industry capacity come online; fluctuations in raw material prices, quality and supply and in energy prices and supply; production outages or material costs associated with scheduled or unscheduled maintenance programs; unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; an inability to achieve or delays in achieving or achievement of less than the anticipated financial benefit from initiatives related to working capital reductions, cost reductions and employee productivity goals; an inability to raise or sustain prices for products or services; an inability to maintain appropriate relations with unions and employees; the inability to achieve expected results from our acquisition activities; our ability to continue to pay cash dividends; the amount and timing of repurchases of our common shares, if any; and other factors affecting our business beyond our control, including, without limitation, changes in the general economy, changes in interest rates and changes in the rate of inflation.