we refine cto through a distillation process into four primary constituent fractions : tall oil fatty acids ( “ tofa ” ) ; tall oil rosin ( “ tor ” ) ; distilled tall oil ( “ dto ” ) ; and tall oil pitch . we further upgrade tofa and tor into derivatives such as dimer acids , polyamide resins , rosin resins , dispersions , and disproportionated resins . we refine cst into terpene fractions , which can be further upgraded into specialty terpene resins . the various fractions and derivatives resulting from our cto and cst refining process provide for distinct functionalities and properties , determining their respective applications and end markets . we focus our resources on three product groups : adhesives , performance chemicals , and tires . within our product groups , our products are sold into a diverse range of submarkets , including packaging , tapes and labels , pavement marking , high performance tires , fuel additives , oilfield and mining , coatings , metalworking fluids and lubricants , inks , and flavor and fragrances , among others . while this business is based predominantly on the refining and upgrading of cto and cst , we have the capacity to use both hydrocarbon-based raw materials , such as alpha-methyl-styrene , rosins , and gum rosins where appropriate and , accordingly , are able to offer tailored solutions for our customers . 33 recent developments and known trends our business is subject to a number of known risks and uncertainties , some of which are a result of recent developments . coronavirus . the recent emergence of the coronavirus in china , and other affected countries , has resulted in certain emergency measures to combat the spread of the virus , including extension of the lunar new year holidays , implementation of travel restrictions and extended shutdown of certain businesses in regions in which we operate and could also substantially interfere with general commercial activity related to our supply chain and customer base . while the full impact of the outbreak is unknown at this time , we have restricted employee travel to china , and other countries as appropriate , as a safety precaution . in addition , through the first two months of 2020 the coronavirus has resulted in further disruption of business activity and demand in china and broader asia . at this time , it is not possible to determine the full-year 2020 impact of the coronavirus . market conditions . market fundamentals and demand for our specialty polymer automotive and compounding applications saw continued deterioration within china and broader asia , and more recently in europe during the third quarter of 2019. in addition , results for performance polymers were affected by soft paving and roofing demand , due to the slow start of the 2019 paving and roofing season . this resulted in elevated customer inventories and ample supply availability from market participants , which contributed to intensified competitive market conditions . the chemical segment continues to see pressure on pricing in rosin end markets such as adhesives and road markings driven by weakness in gum rosin pricing and excess hydrocarbon supply . rosin prices remain under pressure and are not expected to recover through 2020. the crude sulfate turpentine refining product prices remain at a consistent level relative to the second half of 2019 , and are not expected to improve through 2020. strategic alternatives for cariflex business . in february 2019 , the company 's board of directors initiated a process to review strategic alternatives for our cariflex business . on october 30 , 2019 , we announced that we have agreed to a purchase and sale agreement with daelim industrial co. , ltd. for our cariflex business unit for a gross purchase price of $ 530 million . the transaction is expected to close in the first quarter of 2020 , subject to customary regulatory approvals and other closing conditions as set forth in the purchase and sale agreement . tariffs . effective september 24 , 2018 , the office of the u.s. trade representative enacted a 10.0 % tariff on certain goods imported from china under section 301 of the trade expansion act of 1974 , which increased up to 25.0 % in 2019 on raw material imports of ours . in addition , china enacted tariffs on certain goods imported into china from the united states of up to 25.0 % during 2018 , which increased up to 30.0 % in 2019 , impacting our sales into china . we have implemented certain mitigation efforts to minimize the effects of any pricing and supply conditions . these tariffs have impacted the chinese economy and thus demand for certain products of ours in china ; however , the direct financial impact of tariff costs to kraton is not material . results of operations factors affecting our results of operations raw materials . we use butadiene , styrene , and isoprene in our polymer segment and cto and cst in our chemical segment as our primary raw materials . the cost of these raw materials has generally correlated with changes in energy prices and is generally influenced by supply and demand factors , and for our isoprene monomers , the prices for natural and synthetic rubber . average purchase prices of our raw materials decreased during 2019 compared to 2018 for the polymer segment and increased during 2019 compared to 2018 for the chemical . we use the fifo basis of accounting for inventory and cost of goods sold , and therefore gross profit . in periods of raw material price volatility , reported results under fifo will differ from what the results would have been if cost of goods sold were based on ecrc . specifically , in periods of rising raw material costs , reported gross profit will be higher under fifo than under ecrc . story_separator_special_tag if the cost of the inventories exceeds their net realizable value , provisions are made for the difference between the cost and the net realizable value . impairment of long-lived assets . in accordance with the impairment or disposal of long-lived assets subsections of financial accounting standards board ( “ fasb ” ) asc subtopic 360-10 , property , plant , and equipment—overall , long-lived assets , such as property , plant , and equipment , and purchased intangible assets subject to amortization are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable . if circumstances require a long-lived asset or asset group be tested for possible impairment , we first compare undiscounted cash flows expected to be generated by that asset or asset group to its carrying value . if the carrying value of the long-lived asset or asset group is not recoverable on an undiscounted cash flow basis , impairment is recognized to the extent that the carrying value exceeds its fair value . fair value is determined through various valuation techniques including discounted cash flow models , quoted market values , and third-party independent appraisals , as considered necessary . goodwill . we record goodwill when the purchase price of an acquired business exceeds the fair value of the net identifiable assets acquired . goodwill is allocated to the reporting unit level based on the estimated fair value at the date of acquisition . goodwill was recorded as a result of the arizona chemical acquisition and is recorded in the chemical operating segment . goodwill is tested for impairment at the reporting unit level annually or more frequently as deemed necessary . our annual measurement date for testing impairment is october 1st . the assessment is performed in three steps . we assess qualitative factors , or step zero , to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount . if it is more likely than not that an impairment indicator exists utilizing the qualitative method , we then utilize step one to test for impairment via estimating the fair value of our reporting units utilizing a combination of market and income approaches . this step one provides a fair value to determine whether it is more likely than not that the fair value of the reporting unit is less than its carrying value , including goodwill . the estimated fair value of our reporting units are subject to a number of estimates , including discount rates , revenue growth rates , cash flow assumptions , and market information . if potential impairments are identified , we perform step two to measure the impairment loss through a full fair value allocation of the assets and liabilities of the reporting unit utilizing the acquisition method of accounting . as of october 1 , 2019 , the company elected to bypass the qualitative assessment and performed a fair value assessment of the reporting unit utilizing a combination of the income and market approach . the company 's assessment concluded that the fair value of the reporting unit exceeded the book value of the reporting unit , including goodwill , and thus there was no impairment recognized . share-based compensation . share-based compensation cost is measured at the grant date based on the fair value of the award . we recognize these costs using the straight-line method over the requisite service period . upon adoption of asu 2016-09 , improvements to employee share-based payment accounting ( topic 817 ) , we now recognize actual forfeitures by reducing the employee share-based compensation expense in the same period as the forfeitures occur . we estimate the fair value of performance-based restricted share units using a combination of monte carlo simulations and internal metrics . the expected term represents the period of time that performance share units granted are expected to be outstanding . our expected volatilities are based on historical volatilities for kraton and the members of the peer group . the risk free interest rate for the periods within the contractual life of the performance-based restricted share units is equal to the yield , as of the valuation date , of the zero coupon u.s. treasury strips that have a remaining term equal to the length of the remaining performance period . the expected dividend yield is assumed to be zero , which is the equivalent of reinvesting dividends in the underlying company 's stock . forfeitures are recognized when they occur . see note 5 share-based compensation to the consolidated financial statements . 40 income taxes . we conduct operations in separate legal entities in different jurisdictions . as a result , income tax amounts are reflected in our consolidated financial statements for each of those jurisdictions . income taxes are recorded utilizing an asset and liability approach . this method gives consideration to the future tax consequences associated with the differences between the financial accounting and tax basis of the assets and liabilities as well as the ultimate realization of any deferred tax asset resulting from such differences . valuation allowances are recorded to reduce deferred tax assets when it is more likely than not that a tax benefit will not be realized . in determining whether a valuation allowance is required , the company evaluates primarily the impact of cumulative losses in past years and current and or recent losses . a recent trend in earnings despite cumulative losses is a prerequisite to considering not recording a valuation allowance . in assessing the realizability of deferred tax assets , we consider whether it is more likely than not that some portion or all of the deferred tax assets will not be realized . the ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible . we consider

net cash provided by operating activities totaled $ 246.6 million for the year ended december 31 , 2018 and $ 255.4 million for the year ended december 31 , 2017 . this represents a net decrease of $ 8.9 million , which was primarily driven by increases in working capital , partially offset by increases in operating income . the period-over-period changes in working capital are as follows : $ 35.8 million decrease in cash flows associated with inventories of products , materials , and supplies , due to higher inventory volumes and higher raw material costs ; $ 32.2 million decrease in cash flows for other payables and accruals , primarily driven by timing of interest payments , employee related accruals , and customer rebates ; $ 27.1 million decrease in cash flows for accounts receivable , primarily related to higher selling prices , partially offset by lower sales volumes ; partially offset by $ 12.4 million increase in cash flows due to the timing of payments of other items , including related party transactions , pension costs , and transaction taxes ; and $ 12.0 million increase in cash flows associated with trade accounts payable due to timing of payments and higher raw material costs . investing cash flows net cash used in investing activities totaled $ 108.7 million , $ 111.1 million , and $ 122.6 million for the years ended december 31 , 2019 , 2018 , and 2017 , respectively . capital projects in 2019 included the following : $ 67.0 million related to infrastructure and maintenance , and health , safety , environmental , and security projects ; $ 22.0 million related to projects to optimize the production capabilities of our manufacturing assets ; and $ 14.0 million of capital expenditures related to information technology and research and development .


 Write a concise suspicious activity report of the following text delimited by triple backquotes. Return your response as a formal report which covers the key points highlighting the location,dates,entity names and account holder information in chronological order of the text.
     ```net cash provided by operating activities totaled $ 246.6 million for the year ended december 31 , 2018 and $ 255.4 million for the year ended december 31 , 2017 . this represents a net decrease of $ 8.9 million , which was primarily driven by increases in working capital , partially offset by increases in operating income . the period-over-period changes in working capital are as follows : $ 35.8 million decrease in cash flows associated with inventories of products , materials , and supplies , due to higher inventory volumes and higher raw material costs ; $ 32.2 million decrease in cash flows for other payables and accruals , primarily driven by timing of interest payments , employee related accruals , and customer rebates ; $ 27.1 million decrease in cash flows for accounts receivable , primarily related to higher selling prices , partially offset by lower sales volumes ; partially offset by $ 12.4 million increase in cash flows due to the timing of payments of other items , including related party transactions , pension costs , and transaction taxes ; and $ 12.0 million increase in cash flows associated with trade accounts payable due to timing of payments and higher raw material costs . investing cash flows net cash used in investing activities totaled $ 108.7 million , $ 111.1 million , and $ 122.6 million for the years ended december 31 , 2019 , 2018 , and 2017 , respectively . capital projects in 2019 included the following : $ 67.0 million related to infrastructure and maintenance , and health , safety , environmental , and security projects ; $ 22.0 million related to projects to optimize the production capabilities of our manufacturing assets ; and $ 14.0 million of capital expenditures related to information technology and research and development .
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 Suspicious Activity Report : we refine cto through a distillation process into four primary constituent fractions : tall oil fatty acids ( “ tofa ” ) ; tall oil rosin ( “ tor ” ) ; distilled tall oil ( “ dto ” ) ; and tall oil pitch . we further upgrade tofa and tor into derivatives such as dimer acids , polyamide resins , rosin resins , dispersions , and disproportionated resins . we refine cst into terpene fractions , which can be further upgraded into specialty terpene resins . the various fractions and derivatives resulting from our cto and cst refining process provide for distinct functionalities and properties , determining their respective applications and end markets . we focus our resources on three product groups : adhesives , performance chemicals , and tires . within our product groups , our products are sold into a diverse range of submarkets , including packaging , tapes and labels , pavement marking , high performance tires , fuel additives , oilfield and mining , coatings , metalworking fluids and lubricants , inks , and flavor and fragrances , among others . while this business is based predominantly on the refining and upgrading of cto and cst , we have the capacity to use both hydrocarbon-based raw materials , such as alpha-methyl-styrene , rosins , and gum rosins where appropriate and , accordingly , are able to offer tailored solutions for our customers . 33 recent developments and known trends our business is subject to a number of known risks and uncertainties , some of which are a result of recent developments . coronavirus . the recent emergence of the coronavirus in china , and other affected countries , has resulted in certain emergency measures to combat the spread of the virus , including extension of the lunar new year holidays , implementation of travel restrictions and extended shutdown of certain businesses in regions in which we operate and could also substantially interfere with general commercial activity related to our supply chain and customer base . while the full impact of the outbreak is unknown at this time , we have restricted employee travel to china , and other countries as appropriate , as a safety precaution . in addition , through the first two months of 2020 the coronavirus has resulted in further disruption of business activity and demand in china and broader asia . at this time , it is not possible to determine the full-year 2020 impact of the coronavirus . market conditions . market fundamentals and demand for our specialty polymer automotive and compounding applications saw continued deterioration within china and broader asia , and more recently in europe during the third quarter of 2019. in addition , results for performance polymers were affected by soft paving and roofing demand , due to the slow start of the 2019 paving and roofing season . this resulted in elevated customer inventories and ample supply availability from market participants , which contributed to intensified competitive market conditions . the chemical segment continues to see pressure on pricing in rosin end markets such as adhesives and road markings driven by weakness in gum rosin pricing and excess hydrocarbon supply . rosin prices remain under pressure and are not expected to recover through 2020. the crude sulfate turpentine refining product prices remain at a consistent level relative to the second half of 2019 , and are not expected to improve through 2020. strategic alternatives for cariflex business . in february 2019 , the company 's board of directors initiated a process to review strategic alternatives for our cariflex business . on october 30 , 2019 , we announced that we have agreed to a purchase and sale agreement with daelim industrial co. , ltd. for our cariflex business unit for a gross purchase price of $ 530 million . the transaction is expected to close in the first quarter of 2020 , subject to customary regulatory approvals and other closing conditions as set forth in the purchase and sale agreement . tariffs . effective september 24 , 2018 , the office of the u.s. trade representative enacted a 10.0 % tariff on certain goods imported from china under section 301 of the trade expansion act of 1974 , which increased up to 25.0 % in 2019 on raw material imports of ours . in addition , china enacted tariffs on certain goods imported into china from the united states of up to 25.0 % during 2018 , which increased up to 30.0 % in 2019 , impacting our sales into china . we have implemented certain mitigation efforts to minimize the effects of any pricing and supply conditions . these tariffs have impacted the chinese economy and thus demand for certain products of ours in china ; however , the direct financial impact of tariff costs to kraton is not material . results of operations factors affecting our results of operations raw materials . we use butadiene , styrene , and isoprene in our polymer segment and cto and cst in our chemical segment as our primary raw materials . the cost of these raw materials has generally correlated with changes in energy prices and is generally influenced by supply and demand factors , and for our isoprene monomers , the prices for natural and synthetic rubber . average purchase prices of our raw materials decreased during 2019 compared to 2018 for the polymer segment and increased during 2019 compared to 2018 for the chemical . we use the fifo basis of accounting for inventory and cost of goods sold , and therefore gross profit . in periods of raw material price volatility , reported results under fifo will differ from what the results would have been if cost of goods sold were based on ecrc . specifically , in periods of rising raw material costs , reported gross profit will be higher under fifo than under ecrc . story_separator_special_tag if the cost of the inventories exceeds their net realizable value , provisions are made for the difference between the cost and the net realizable value . impairment of long-lived assets . in accordance with the impairment or disposal of long-lived assets subsections of financial accounting standards board ( “ fasb ” ) asc subtopic 360-10 , property , plant , and equipment—overall , long-lived assets , such as property , plant , and equipment , and purchased intangible assets subject to amortization are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable . if circumstances require a long-lived asset or asset group be tested for possible impairment , we first compare undiscounted cash flows expected to be generated by that asset or asset group to its carrying value . if the carrying value of the long-lived asset or asset group is not recoverable on an undiscounted cash flow basis , impairment is recognized to the extent that the carrying value exceeds its fair value . fair value is determined through various valuation techniques including discounted cash flow models , quoted market values , and third-party independent appraisals , as considered necessary . goodwill . we record goodwill when the purchase price of an acquired business exceeds the fair value of the net identifiable assets acquired . goodwill is allocated to the reporting unit level based on the estimated fair value at the date of acquisition . goodwill was recorded as a result of the arizona chemical acquisition and is recorded in the chemical operating segment . goodwill is tested for impairment at the reporting unit level annually or more frequently as deemed necessary . our annual measurement date for testing impairment is october 1st . the assessment is performed in three steps . we assess qualitative factors , or step zero , to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount . if it is more likely than not that an impairment indicator exists utilizing the qualitative method , we then utilize step one to test for impairment via estimating the fair value of our reporting units utilizing a combination of market and income approaches . this step one provides a fair value to determine whether it is more likely than not that the fair value of the reporting unit is less than its carrying value , including goodwill . the estimated fair value of our reporting units are subject to a number of estimates , including discount rates , revenue growth rates , cash flow assumptions , and market information . if potential impairments are identified , we perform step two to measure the impairment loss through a full fair value allocation of the assets and liabilities of the reporting unit utilizing the acquisition method of accounting . as of october 1 , 2019 , the company elected to bypass the qualitative assessment and performed a fair value assessment of the reporting unit utilizing a combination of the income and market approach . the company 's assessment concluded that the fair value of the reporting unit exceeded the book value of the reporting unit , including goodwill , and thus there was no impairment recognized . share-based compensation . share-based compensation cost is measured at the grant date based on the fair value of the award . we recognize these costs using the straight-line method over the requisite service period . upon adoption of asu 2016-09 , improvements to employee share-based payment accounting ( topic 817 ) , we now recognize actual forfeitures by reducing the employee share-based compensation expense in the same period as the forfeitures occur . we estimate the fair value of performance-based restricted share units using a combination of monte carlo simulations and internal metrics . the expected term represents the period of time that performance share units granted are expected to be outstanding . our expected volatilities are based on historical volatilities for kraton and the members of the peer group . the risk free interest rate for the periods within the contractual life of the performance-based restricted share units is equal to the yield , as of the valuation date , of the zero coupon u.s. treasury strips that have a remaining term equal to the length of the remaining performance period . the expected dividend yield is assumed to be zero , which is the equivalent of reinvesting dividends in the underlying company 's stock . forfeitures are recognized when they occur . see note 5 share-based compensation to the consolidated financial statements . 40 income taxes . we conduct operations in separate legal entities in different jurisdictions . as a result , income tax amounts are reflected in our consolidated financial statements for each of those jurisdictions . income taxes are recorded utilizing an asset and liability approach . this method gives consideration to the future tax consequences associated with the differences between the financial accounting and tax basis of the assets and liabilities as well as the ultimate realization of any deferred tax asset resulting from such differences . valuation allowances are recorded to reduce deferred tax assets when it is more likely than not that a tax benefit will not be realized . in determining whether a valuation allowance is required , the company evaluates primarily the impact of cumulative losses in past years and current and or recent losses . a recent trend in earnings despite cumulative losses is a prerequisite to considering not recording a valuation allowance . in assessing the realizability of deferred tax assets , we consider whether it is more likely than not that some portion or all of the deferred tax assets will not be realized . the ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible . we consider

