{"id":13478,"date":"2026-01-16T11:44:57","date_gmt":"2026-01-16T11:44:57","guid":{"rendered":"https:\/\/studybel.com\/flue-gas-treatment\/"},"modified":"2026-05-27T10:17:34","modified_gmt":"2026-05-27T10:17:34","slug":"flue-gas-treatment","status":"publish","type":"page","link":"https:\/\/studybel.com\/en\/flue-gas-treatment\/","title":{"rendered":"Flue gas treatment"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"13478\" class=\"elementor elementor-13478 elementor-11960\" data-elementor-post-type=\"page\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-94d8692 elementor-section-stretched elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"94d8692\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;stretch_section&quot;:&quot;section-stretched&quot;,&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-wider\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-0462f6b\" data-id=\"0462f6b\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e288d0e elementor-widget elementor-widget-text-editor\" data-id=\"e288d0e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"color: #fff;\"><strong>Flue gas treatment<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t<div class=\"elementor-element elementor-element-284dd5d e-flex e-con-boxed e-con e-parent\" data-id=\"284dd5d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-64cf8ca elementor-widget elementor-widget-text-editor\" data-id=\"64cf8ca\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-path-to-node=\"0\">Studybel\u2019s flue gas treatment operations are conducted under the banner of Leroux &#038; Lotz Technologies, a sister company of the Boccard Group and a specialist in energy and combustion technologies, enabling the design and implementation of comprehensive systems (Air Quality System \u2013 AQS) that ensure environmental compliance and the operational reliability of industrial facilities. <\/p><p data-path-to-node=\"0\">As an EPC contractor, the company is involved in every stage of a project\u2019s lifecycle\u2014from performance specification to commissioning\u2014whether for new facilities, complex retrofits, or upgrades\u2014while managing critical interfaces ranging from reagent management to waste treatment, and integrating process, mechanical, regulatory, and operational constraints.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-387abf8 elementor-widget elementor-widget-heading\" data-id=\"387abf8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Our Air Quality System (AQS) solutions<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-205b689 e-grid e-con-full e-con e-child\" data-id=\"205b689\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-961aadb elementor-widget elementor-widget-text-editor\" data-id=\"961aadb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>1. Dust Removal<\/strong><\/p><p data-path-to-node=\"1\">Studybel designs custom dust collection systems (multicyclones, electrostatic precipitators, bag filters, or hybrid solutions) that ensure very low emission levels\u2014as low as 5 mg\/Nm\u00b3\u2014while meeting the most stringent operational constraints and regulatory requirements.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b8a5eb2 elementor-widget elementor-widget-image\" data-id=\"b8a5eb2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"900\" src=\"https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-ESP2-1-1200x900.jpg\" class=\"attachment-large size-large wp-image-12334\" alt=\"\" srcset=\"https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-ESP2-1-1200x900.jpg 1200w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-ESP2-1-500x375.jpg 500w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-ESP2-1-300x225.jpg 300w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-ESP2-1-768x576.jpg 768w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-ESP2-1-1536x1152.jpg 1536w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-ESP2-1-2048x1536.jpg 2048w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-ESP2-1-100x75.jpg 100w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-ESP2-1-960x720.jpg 960w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-ESP2-1-480x360.jpg 480w\" sizes=\"(max-width:767px) 480px, (max-width:1200px) 100vw, 1200px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b8004cb e-grid e-con-full e-con e-child\" data-id=\"b8004cb\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f386f8a elementor-hidden-tablet elementor-hidden-mobile elementor-widget elementor-widget-image\" data-id=\"f386f8a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1200\" height=\"800\" src=\"https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-FGT3-1-1200x800.png\" class=\"attachment-large size-large wp-image-12337\" alt=\"\" srcset=\"https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-FGT3-1-1200x800.png 1200w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-FGT3-1-500x333.png 500w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-FGT3-1-300x200.png 300w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-FGT3-1-768x512.png 768w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-FGT3-1-113x75.png 113w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-FGT3-1-480x320.png 480w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-FGT3-1.png 1536w\" sizes=\"(max-width:767px) 480px, (max-width:1200px) 100vw, 1200px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-19def4e elementor-widget elementor-widget-text-editor\" data-id=\"19def4e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong><span style=\"letter-spacing: 0px;\">2. Flue gas treatment (FGT)<\/span><\/strong><\/p><p>Studybel deploys dry and semi-wet neutralization systems recognized for their efficiency, flexibility, and operational reliability, incorporating the use of reagents (bicarbonate, lime, activated carbon) and residues\u2014from storage through disposal\u2014to ensure efficient and flexible filtration.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7cedc8d elementor-hidden-desktop elementor-widget elementor-widget-image\" data-id=\"7cedc8d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1200\" height=\"800\" src=\"https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-FGT3-1-1200x800.png\" class=\"attachment-large size-large wp-image-12337\" alt=\"\" srcset=\"https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-FGT3-1-1200x800.png 1200w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-FGT3-1-500x333.png 500w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-FGT3-1-300x200.png 300w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-FGT3-1-768x512.png 768w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-FGT3-1-113x75.png 113w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-FGT3-1-480x320.png 480w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-FGT3-1.png 1536w\" sizes=\"(max-width:767px) 480px, (max-width:1200px) 100vw, 1200px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f15f898 e-grid e-con-full e-con e-child\" data-id=\"f15f898\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4e0dfbf elementor-widget elementor-widget-text-editor\" data-id=\"4e0dfbf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>3. Denitrification (DeNOx)<\/strong><\/p><p data-path-to-node=\"1\">Reduction of nitrogen oxides (NOx) using SNCR (Selective Non-Catalytic Reduction) or SCR (Selective Catalytic Reduction), with a comprehensive approach that takes into account the temperature range, process constraints, boiler interfaces, and long-term operational requirements.<span class=\"EOP SCXW86575861 BCX0\" data-ccp-props=\"{\"335551550\":6,\"335551620\":6}\"> <\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2d35272 elementor-widget elementor-widget-image\" data-id=\"2d35272\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1200\" height=\"900\" src=\"https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-DENOX1-1200x900.jpg\" class=\"attachment-large size-large wp-image-12328\" alt=\"\" srcset=\"https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-DENOX1-1200x900.jpg 1200w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-DENOX1-500x375.jpg 500w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-DENOX1-300x225.jpg 300w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-DENOX1-768x576.jpg 768w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-DENOX1-1536x1152.jpg 1536w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-DENOX1-2048x1536.jpg 2048w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-DENOX1-100x75.jpg 100w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-DENOX1-960x720.jpg 960w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/AQS-DENOX1-480x360.jpg 480w\" sizes=\"(max-width:767px) 480px, (max-width:1200px) 100vw, 1200px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e7800d0 e-flex e-con-boxed e-con e-parent\" data-id=\"e7800d0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-602192c elementor-widget elementor-widget-heading\" data-id=\"602192c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">An integrated EPC approach throughout the entire lifecycle<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9f50436 elementor-widget elementor-widget-text-editor\" data-id=\"9f50436\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-path-to-node=\"0\"><span class=\"TextRun SCXW243808736 BCX0\" lang=\"FR-BE\" xml:lang=\"FR-BE\" data-contrast=\"auto\">Under the Leroux &#038; Lotz Technologies banner, Studybel provides services throughout the entire lifecycle of flue gas treatment systems:<\/span><span class=\"EOP SCXW243808736 BCX0\" data-ccp-props=\"{\"335551550\":6,\"335551620\":6}\"> <\/span><\/p><ul><li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"13\" data-list-defn-props=\"{\"335552541\":1,\"335559685\":720,\"335559991\":360,\"469769226\":\"Symbol\",\"469769242\":[8226],\"469777803\":\"left\",\"469777804\":\"\uf0b7\",\"469777815\":\"multilevel\"}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">New construction: complete design and installation of AQS systems, integrated with the furnaces and boilers.<\/span><span data-ccp-props=\"{\"335551550\":6,\"335551620\":6}\"> <\/span><\/li><\/ul><ul><li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"13\" data-list-defn-props=\"{\"335552541\":1,\"335559685\":720,\"335559991\":360,\"469769226\":\"Symbol\",\"469769242\":[8226],\"469777803\":\"left\",\"469777804\":\"\uf0b7\",\"469777815\":\"multilevel\"}\" data-aria-posinset=\"2\" data-aria-level=\"1\"><span data-contrast=\"auto\">Retrofit &#038; upgrade: regulatory compliance, adaptation to new fuels, and improved environmental performance.<\/span><span data-ccp-props=\"{\"335551550\":6,\"335551620\":6}\"> <\/span><\/li><\/ul><ul><li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"13\" data-list-defn-props=\"{\"335552541\":1,\"335559685\":720,\"335559991\":360,\"469769226\":\"Symbol\",\"469769242\":[8226],\"469777803\":\"left\",\"469777804\":\"\uf0b7\",\"469777815\":\"multilevel\"}\" data-aria-posinset=\"3\" data-aria-level=\"1\"><span data-contrast=\"auto\">Services &#038; expertise: troubleshooting, OPEX optimization, improved availability, and ongoing technical support.<\/span><span data-ccp-props=\"{\"335551550\":6,\"335551620\":6}\"> <\/span><\/li><\/ul><p><span class=\"TextRun SCXW227702645 BCX0\" lang=\"FR-BE\" xml:lang=\"FR-BE\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW227702645 BCX0\">These solutions are designed specifically for the waste-to-energy, biomass, minerals, steel, refining, cement, and paper industries.<\/span><\/span><span class=\"EOP SCXW227702645 BCX0\" data-ccp-props=\"{\"335551550\":6,\"335551620\":6}\"> <\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0378a56 elementor-widget elementor-widget-image\" data-id=\"0378a56\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"280\" src=\"https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/photos-page-home-site-internet-studybel-14.png\" class=\"attachment-large size-large wp-image-12347\" alt=\"\" srcset=\"https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/photos-page-home-site-internet-studybel-14.png 800w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/photos-page-home-site-internet-studybel-14-500x175.png 500w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/photos-page-home-site-internet-studybel-14-300x105.png 300w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/photos-page-home-site-internet-studybel-14-768x269.png 768w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/photos-page-home-site-internet-studybel-14-150x53.png 150w, https:\/\/studybel.com\/wp-content\/uploads\/2026\/02\/photos-page-home-site-internet-studybel-14-480x168.png 480w\" sizes=\"(max-width:767px) 480px, (max-width:800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-77d29d6 e-con-full e-flex e-con e-child\" data-id=\"77d29d6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ff413b2 elementor-widget elementor-widget-heading\" data-id=\"ff413b2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Related services<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-938695e elementor-widget elementor-widget-text-editor\" data-id=\"938695e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li data-path-to-node=\"0\"><a href=\"https:\/\/studybel.com\/en\/apc-replacement-parts\/\">APC Replacement Parts<\/a><\/li><li data-path-to-node=\"0\"><a href=\"https:\/\/studybel.com\/en\/hamon-environmental-research-cottrell-legacy-support\/\">Support Hamon Environmental \/ Research-Cottrell<\/a><\/li><li data-path-to-node=\"0\"><a href=\"https:\/\/studybel.com\/en\/troubleshooting-retrofit-apc\/\">Troubleshooting &#038; Retrofit APC<\/a><\/li><li data-path-to-node=\"0\"><a href=\"https:\/\/studybel.com\/en\/lifecycle-apc\/\">Life cycle APC<\/a><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Flue gas treatment Studybel\u2019s flue gas treatment operations are conducted under the banner of Leroux &#038; Lotz Technologies, a sister company of the Boccard Group and<span class=\"excerpt-hellip\"> [\u2026]<\/span><\/p>\n","protected":false},"author":8,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-13478","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Flue gas treatment - Votre partenaire industriel<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/studybel.com\/en\/flue-gas-treatment\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Flue gas treatment - Votre partenaire industriel\" \/>\n<meta property=\"og:description\" content=\"Flue gas treatment Studybel\u2019s flue gas treatment operations are conducted under the banner 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