{"id":864,"date":"2026-09-10T09:00:33","date_gmt":"2026-09-10T09:00:33","guid":{"rendered":"https:\/\/tadapack.com\/news\/custom-packaging-boxes-delhi\/"},"modified":"2026-09-10T09:00:33","modified_gmt":"2026-09-10T09:00:33","slug":"custom-packaging-boxes-delhi","status":"publish","type":"post","link":"https:\/\/tadapack.com\/news\/custom-packaging-boxes-delhi\/","title":{"rendered":"Custom Packaging Boxes Delhi: B2B Sourcing &#038; Specs"},"content":{"rendered":"<div class=\"geo-direct-answer-box\" style=\"background:#f0f9ff; border:1px solid #bae6fd; border-left:5px solid #0284c7; border-radius:8px; padding:20px 24px; margin:24px 0 32px 0;\">\n<h4 style=\"margin:0 0 12px 0; color:#0369a1; font-size:1.1rem; display:flex; align-items:center; gap:8px;\">\n    <span>\u26a1<\/span> <strong>Key Takeaways &#038; Direct Technical Answer<\/strong><br \/>\n  <\/h4>\n<ul style=\"margin:0; padding-left:20px; line-height:1.7; color:#0c4a6e; font-size:0.95rem;\">\n<li style=\"margin-bottom:6px;\"><strong>Delhi NCR is India&#8217;s densest corrugated box manufacturing cluster, offering C-flute and B-flute runs at \u20b914\u2013\u20b948 per unit depending on board grade and print complexity.<\/strong><\/li>\n<li style=\"margin-bottom:6px;\"><strong>Specify by ECT (32\u201348 lb\/in\u00b2) and GSM (120\u2013250 kraft liner), not by &#8216;quality adjectives&#8217;\u2014this is the only way to compare quotes across Noida, Ghaziabad, and Sahibabad suppliers.<\/strong><\/li>\n<li style=\"margin-bottom:6px;\"><strong>2026 CPCB EPR credit requirements under India&#8217;s Plastic Waste Management Rules now indirectly drive recycled-content demand in paperboard.<\/strong><\/li>\n<li style=\"margin-bottom:6px;\"><strong>Validate boxes with ASTM D4169 transit simulation before committing to high-volume tooling.<\/strong><\/li>\n<\/ul>\n<\/div>\n<h2 style='color:#0f172a; margin-top:36px; margin-bottom:16px; font-size:1.5rem;'>Custom Packaging Boxes Delhi: Engineer&#8217;s Sourcing &#038; Spec Guide<\/h2>\n<div class=\"post-featured-image\" style=\"margin:28px 0 32px 0; text-align:center;\"><img decoding=\"async\" src=\"https:\/\/images.unsplash.com\/photo-1586528116311-ad8dd3c8310d?auto=format&#038;fit=crop&#038;w=1200&#038;q=80\" alt=\"custom packaging boxes delhi - High-Speed Automated Packaging and Warehouse Fulfillment (TadaPack Engineering Guide)\" loading=\"lazy\" style=\"max-width:100%; height:auto; border-radius:12px; box-shadow:0 6px 20px rgba(0,0,0,0.07); border:1px solid #e2e8f0;\"><\/p>\n<p style=\"font-size:0.84rem; color:#64748b; margin-top:10px; font-style:italic;\">custom packaging boxes delhi &#8211; High-Speed Automated Packaging and Warehouse Fulfillment (TadaPack Engineering Guide)<\/p>\n<\/div>\n<p style=\"margin:16px 0; line-height:1.8; color:#334155; font-size:1.02rem;\">Delhi NCR\u2014spanning Noida, Ghaziabad, Sahibabad, and Bhiwadi\u2014hosts one of Asia&#8217;s densest corrugated converting clusters. For B2B buyers sourcing custom packaging boxes in Delhi, the challenge is not availability; it is specification discipline. Suppliers quote aggressively, but without ECT, GSM, and flute callouts on the RFQ, quotes are not comparable. This guide defines the technical baselines, cost benchmarks, and 2026 compliance context needed to procure correctly.<\/p>\n<p style=\"margin:16px 0; line-height:1.8; color:#334155; font-size:1.02rem;\">Part of our broader coverage on <a href=\"https:\/\/tadapack.com\/news\/custom-packaging\/\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"color:#0284c7; text-decoration:underline; font-weight:600;\">Custom E-Commerce &#038; Retail Packaging<\/a>.<\/p>\n<h2 style='color:#0f172a; margin-top:36px; margin-bottom:16px; font-size:1.5rem; border-bottom:1px solid #e2e8f0; padding-bottom:8px;'>Why Delhi NCR for Custom Corrugated<\/h2>\n<p style=\"margin:16px 0; line-height:1.8; color:#334155; font-size:1.02rem;\">The cluster advantages are structural, not incidental:<\/p>\n<ul style=\"margin:16px 0; padding-left:24px; line-height:1.75; color:#334155;\">\n<li style=\"margin-bottom:8px;\"><strong style='color:#0f172a;'>Material proximity<\/strong>: Paper mills in Muzaffarnagar and recycled fiber hubs in Uttar Pradesh feed linerboard within a 200 km radius.<\/li>\n<li style=\"margin-bottom:8px;\"><strong style='color:#0f172a;'>Converting capacity<\/strong>: Flexo folder-gluer lines dominate; offset-litho laminated plants (for retail-grade graphics) concentrate in Noida&#8217;s Sector 63\u201365 belt.<\/li>\n<li style=\"margin-bottom:8px;\"><strong style='color:#0f172a;'>Freight economics<\/strong>: Boxes ship flat; a Delhi supplier covers 70% of North India&#8217;s e-commerce fulfillment centers within one-day road freight.<\/li>\n<\/ul>\n<h2 style='color:#0f172a; margin-top:36px; margin-bottom:16px; font-size:1.5rem; border-bottom:1px solid #e2e8f0; padding-bottom:8px;'>Specifying Board: ECT and GSM, Not Adjectives<\/h2>\n<p style=\"margin:16px 0; line-height:1.8; color:#334155; font-size:1.02rem;\">All corrugated strength comparisons must run through <a href=\"https:\/\/tadapack.com\/news\/custom-packaging-boxes-cheap\/\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"color:#0284c7; text-decoration:underline; font-weight:600;\">ECT vs Mullen Burst metrics<\/a>. For Delhi sourcing:<\/p>\n<ul style=\"margin:16px 0; padding-left:24px; line-height:1.75; color:#334155;\">\n<li style=\"margin-bottom:8px;\"><strong style='color:#0f172a;'>E-commerce shipper (3-ply)<\/strong>: 120\u2013150 GSM kraft liner, C-flute (~4.0 mm), target ECT 32 lb\/in\u00b2.<\/li>\n<li style=\"margin-bottom:8px;\"><strong style='color:#0f172a;'>Heavy retail carton (5-ply)<\/strong>: 150\u2013200 GSM liners, BC-flute combination (~7.0 mm combined), ECT 44\u201348 lb\/in\u00b2.<\/li>\n<li style=\"margin-bottom:8px;\"><strong style='color:#0f172a;'>Retail display \/ litho-laminated<\/strong>: 250\u2013300 GSM duplex mounted on E-flute (~1.5 mm) for high-resolution branding.<\/li>\n<\/ul>\n<p style=\"margin:16px 0; line-height:1.8; color:#334155; font-size:1.02rem;\">Insist that suppliers declare <a href=\"https:\/\/tadapack.com\/news\/custom-packaging-boxes-cheap\/\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"color:#0284c7; text-decoration:underline; font-weight:600;\">corrugated flute profiles<\/a> and recycled-content percentage in writing. Domestic mills vary recycled fiber content between 60% and 100%, which directly affects compression strength variance between production lots.<\/p>\n<h2 style='color:#0f172a; margin-top:36px; margin-bottom:16px; font-size:1.5rem; border-bottom:1px solid #e2e8f0; padding-bottom:8px;'>2026 Compliance Context: EPR and Recycled Content<\/h2>\n<p style=\"margin:16px 0; line-height:1.8; color:#334155; font-size:1.02rem;\">While corrugated itself is paper-based, India&#8217;s EPR framework under the Plastic Waste Management Rules\u2014administered by CPCB\u2014continues to push brand owners toward fiber-based mono-material alternatives. Any plastic lamination, BOPP film, or PE coating on your box shifts compliance burden to you as the brand owner. For 2026 procurement, specify:<\/p>\n<ul style=\"margin:16px 0; padding-left:24px; line-height:1.75; color:#334155;\">\n<li style=\"margin-bottom:8px;\">Water-based or KO-compliant inks over film lamination.<\/li>\n<li style=\"margin-bottom:8px;\"><a href=\"https:\/\/tadapack.com\/news\/custom-packaging-boxes-canada\/\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"color:#0284c7; text-decoration:underline; font-weight:600;\">FSC-certified or recycled-certified<\/a> liner sourcing where export markets (EU PPWR-aligned retailers) demand chain-of-custody documentation.<\/li>\n<\/ul>\n<p style=\"margin:16px 0; line-height:1.8; color:#334155; font-size:1.02rem;\">Buyers shipping into Canada or the EU should review regional compliance parallels in our <a href=\"https:\/\/tadapack.com\/news\/custom-packaging-boxes-canada\/\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"color:#0284c7; text-decoration:underline; font-weight:600;\">Canada sourcing guide<\/a>.<\/p>\n<h2 style='color:#0f172a; margin-top:36px; margin-bottom:16px; font-size:1.5rem; border-bottom:1px solid #e2e8f0; padding-bottom:8px;'>Cost Benchmarks (2026, Delhi NCR FOB)<\/h2>\n<div class=\"table-responsive\" style=\"overflow-x:auto; margin: 28px 0; border:1px solid #e2e8f0; border-radius:10px; box-shadow:0 2px 8px rgba(0,0,0,0.03);\">\n<table style=\"width:100%; border-collapse:collapse; text-align:left; background:#ffffff;\">\n<thead>\n<tr style=\"background:#f8fafc; border-bottom:2px solid #e2e8f0;\">\n<th style=\"border:1px solid #e2e8f0; padding:12px 16px; background:#f8fafc; color:#0f172a; font-weight:700; font-size:0.92rem;\">Box Type<\/th>\n<th style=\"border:1px solid #e2e8f0; padding:12px 16px; background:#f8fafc; color:#0f172a; font-weight:700; font-size:0.92rem;\">Board Spec<\/th>\n<th style=\"border:1px solid #e2e8f0; padding:12px 16px; background:#f8fafc; color:#0f172a; font-weight:700; font-size:0.92rem;\">Indicative Unit Cost<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"border-bottom:1px solid #e2e8f0;\">\n<td style=\"border:1px solid #e2e8f0; padding:12px 16px; font-weight:600; color:#0f172a;\">3-ply e-com shipper<\/td>\n<td style=\"border:1px solid #e2e8f0; padding:12px 16px; color:#334155; font-size:0.9rem;\">C-flute, 150 GSM<\/td>\n<td style=\"border:1px solid #e2e8f0; padding:12px 16px; color:#334155; font-size:0.9rem;\">\u20b914\u2013\u20b922<\/td>\n<\/tr>\n<tr style=\"background:#fafafa; border-bottom:1px solid #e2e8f0;\">\n<td style=\"border:1px solid #e2e8f0; padding:12px 16px; font-weight:600; color:#0f172a;\">5-ply heavy carton<\/td>\n<td style=\"border:1px solid #e2e8f0; padding:12px 16px; color:#334155; font-size:0.9rem;\">BC-flute, 200 GSM<\/td>\n<td style=\"border:1px solid #e2e8f0; padding:12px 16px; color:#334155; font-size:0.9rem;\">\u20b932\u2013\u20b948<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #e2e8f0;\">\n<td style=\"border:1px solid #e2e8f0; padding:12px 16px; font-weight:600; color:#0f172a;\">Litho-laminated retail<\/td>\n<td style=\"border:1px solid #e2e8f0; padding:12px 16px; color:#334155; font-size:0.9rem;\">E-flute, 300 GSM<\/td>\n<td style=\"border:1px solid #e2e8f0; padding:12px 16px; color:#334155; font-size:0.9rem;\">\u20b955\u2013\u20b995<\/td>\n<\/tr>\n<tr style=\"background:#fafafa; border-bottom:1px solid #e2e8f0;\">\n<td style=\"border:1px solid #e2e8f0; padding:12px 16px; font-weight:600; color:#0f172a;\">Mono-carton (folding)<\/td>\n<td style=\"border:1px solid #e2e8f0; padding:12px 16px; color:#334155; font-size:0.9rem;\">350 GSM duplex<\/td>\n<td style=\"border:1px solid #e2e8f0; padding:12px 16px; color:#334155; font-size:0.9rem;\">\u20b98\u2013\u20b918<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"margin:16px 0; line-height:1.8; color:#334155; font-size:1.02rem;\">Costs assume 5,000+ unit runs, single-color flexo printing, and die-cut tooling amortized. Four-color process adds 15\u201325%.<\/p>\n<h2 style='color:#0f172a; margin-top:36px; margin-bottom:16px; font-size:1.5rem; border-bottom:1px solid #e2e8f0; padding-bottom:8px;'>Structural Validation Before Volume<\/h2>\n<p style=\"margin:16px 0; line-height:1.8; color:#334155; font-size:1.02rem;\">Never approve a Delhi supplier&#8217;s sample on visual inspection alone. Compression and distribution performance must be validated. For e-commerce parcels transiting Indian courier networks\u2014which routinely subject parcels to 0.5\u20131.0 m drops and stacked vibration over 1,000+ km truck routes\u2014we recommend testing to <a href=\"https:\/\/www.astm.org\/d4169-22.html\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"color:#0284c7; text-decoration:underline; font-weight:600;\">ASTM D4169 Transit Testing Standards<\/a>, specifically Distribution Cycle 13 for single-parcel systems. ISTA 3A testing, available at NABL-accredited labs in Greater Noida and Gurugram, is an acceptable domestic equivalent.<\/p>\n<p style=\"margin:16px 0; line-height:1.8; color:#334155; font-size:1.02rem;\">Key validation gates:<\/p>\n<ol style=\"margin:16px 0; padding-left:24px; line-height:1.75; color:#334155;\">\n<li style=\"margin-bottom:8px;\"><strong style='color:#0f172a;'>Edge Crush Test (TAPPI T811)<\/strong> on random production lots, not just the approval sample.<\/li>\n<li style=\"margin-bottom:8px;\"><strong style='color:#0f172a;'>Drop test<\/strong> at worst-case orientation on a fully packed, worst-tolerance box.<\/li>\n<li style=\"margin-bottom:8px;\"><strong style='color:#0f172a;'>Stacking compression<\/strong> at 3\u00d7 intended warehouse stack height.<\/li>\n<\/ol>\n<h2 style='color:#0f172a; margin-top:36px; margin-bottom:16px; font-size:1.5rem; border-bottom:1px solid #e2e8f0; padding-bottom:8px;'>Supplier Vetting Checklist<\/h2>\n<ul style=\"margin:16px 0; padding-left:24px; line-height:1.75; color:#334155;\">\n<li style=\"margin-bottom:8px;\">Declare flute profile, liner GSM, and ECT on the quote itself.<\/li>\n<li style=\"margin-bottom:8px;\">Confirm die-tooling ownership transfer (one-time \u20b94,000\u2013\u20b912,000 for rotary dies).<\/li>\n<li style=\"margin-bottom:8px;\">Verify in-plant QC: moisture meter (target 6\u20139% board moisture; NCR monsoon humidity can push it to 12% and collapse stacking strength by up to 30%).<\/li>\n<li style=\"margin-bottom:8px;\">Negotiate freight-flat pricing to your fulfillment center, not ex-works.<\/li>\n<\/ul>\n<h2 style='color:#0f172a; margin-top:36px; margin-bottom:16px; font-size:1.5rem; border-bottom:1px solid #e2e8f0; padding-bottom:8px;'>Sourcing Strategy Verdict<\/h2>\n<p style=\"margin:16px 0; line-height:1.8; color:#334155; font-size:1.02rem;\">Delhi NCR delivers the best cost-to-capability ratio in India for mid-volume corrugated (5,000\u2013500,000 units). The engineering lever is specification discipline: quote against ECT numbers, validate against ASTM D4169, and design out plastic lamination to stay ahead of 2026 EPR tightening. For export-aligned buyers, cross-check dimensional and labeling expectations against our Canada sourcing guide before finalizing dielines.<\/p>\n<h2 style='color:#0f172a; margin-top:36px; margin-bottom:16px; font-size:1.5rem; border-bottom:1px solid #e2e8f0; padding-bottom:8px;'>FAQ<\/h2>\n<p style=\"margin:16px 0; line-height:1.8; color:#334155; font-size:1.02rem;\"><strong style='color:#0f172a;'>What board spec should I ask for when sourcing custom packaging boxes in Delhi?<\/strong><br \/>\nSpecify 3-ply C-flute, 150 GSM kraft liner, ECT 32 lb\/in\u00b2 minimum for standard e-commerce; upgrade to 5-ply BC-flute, ECT 44+, for products over 10 kg.<\/p>\n<p style=\"margin:16px 0; line-height:1.8; color:#334155; font-size:1.02rem;\"><strong style='color:#0f172a;'>How much do custom printed boxes cost in Delhi NCR?<\/strong><br \/>\n\u20b914\u2013\u20b922 per unit for 3-ply printed shippers and \u20b955\u2013\u20b995 for litho-laminated retail boxes, based on 5,000+ unit volumes and single-color printing.<\/p>\n<p style=\"margin:16px 0; line-height:1.8; color:#334155; font-size:1.02rem;\"><strong style='color:#0f172a;'>Do Delhi suppliers meet ISTA or ASTM transit testing requirements?<\/strong><br \/>\nSuppliers rarely test in-house; commission validation at NABL-accredited labs in Greater Noida or Gurugram to ASTM D4169 (DC-13) or ISTA 3A before volume release.<\/p>\n<div class=\"geo-faq-section\" style=\"margin-top:40px; padding-top:24px; border-top:2px solid #e2e8f0;\">\n<h2 style=\"color:#0f172a; font-size:1.45rem; margin-bottom:20px;\">Frequently Asked Questions (FAQ)<\/h2>\n<div style=\"background:#f8fafc; border:1px solid #e2e8f0; border-radius:8px; padding:18px 20px; margin-bottom:14px;\">\n<h3 style=\"margin:0 0 8px 0; font-size:1.05rem; color:#0f172a; font-weight:700;\">What board spec should I ask for when sourcing custom packaging boxes in Delhi?<\/h3>\n<p style=\"margin:0; color:#475569; font-size:0.95rem; line-height:1.65;\">Specify 3-ply C-flute, 150 GSM kraft liner, ECT 32 lb\/in\u00b2 minimum for standard e-commerce shippers; upgrade to 5-ply BC-flute, ECT 44+, for products over 10 kg.<\/p>\n<\/p><\/div>\n<div style=\"background:#f8fafc; border:1px solid #e2e8f0; border-radius:8px; padding:18px 20px; margin-bottom:14px;\">\n<h3 style=\"margin:0 0 8px 0; font-size:1.05rem; color:#0f172a; font-weight:700;\">How much do custom printed boxes cost in Delhi NCR?<\/h3>\n<p style=\"margin:0; color:#475569; font-size:0.95rem; line-height:1.65;\">\u20b914\u2013\u20b922 per unit for 3-ply printed shippers and \u20b955\u2013\u20b995 for litho-laminated retail boxes, based on 5,000+ unit volumes and single-color flexo printing.<\/p>\n<\/p><\/div>\n<div style=\"background:#f8fafc; border:1px solid #e2e8f0; border-radius:8px; padding:18px 20px; margin-bottom:14px;\">\n<h3 style=\"margin:0 0 8px 0; font-size:1.05rem; color:#0f172a; font-weight:700;\">Do Delhi suppliers meet ISTA or ASTM transit testing requirements?<\/h3>\n<p style=\"margin:0; color:#475569; font-size:0.95rem; line-height:1.65;\">Suppliers rarely test in-house; commission validation at NABL-accredited labs in Greater Noida or Gurugram to ASTM D4169 (DC-13) or ISTA 3A before volume release.<\/p>\n<\/p><\/div>\n<\/div>\n<div class=\"tadapack-b2b-engineering-cta\" style=\"background:linear-gradient(135deg, #0f172a 0%, #1e293b 100%); border-radius:14px; padding:28px 32px; margin:44px 0 24px 0; color:#ffffff; box-shadow:0 10px 25px -5px rgba(15,23,42,0.25); border:1px solid #334155;\">\n<div style=\"display:flex; align-items:flex-start; justify-content:space-between; flex-wrap:wrap; gap:20px;\">\n<div style=\"max-width:640px;\">\n<div style=\"font-size:0.8rem; font-weight:700; color:#38bdf8; text-transform:uppercase; letter-spacing:0.06em; margin-bottom:6px;\">\n        \u2699\ufe0f TadaPack Industrial Packaging Engineering\n      <\/div>\n<h3 style=\"color:#ffffff; margin:0 0 10px 0; font-size:1.35rem; font-weight:800; line-height:1.35;\">\n        Engineering Your Next High-Performance Packaging Batch<br \/>\n      <\/h3>\n<p style=\"color:#94a3b8; font-size:0.92rem; line-height:1.65; margin:0;\">\n        From precision CAD dielines to ISTA drop-testing and certified sustainable substrates, TadaPack helps global brands optimize freight cubic volume, minimize shipping breakage, and satisfy European PPWR \/ EPR packaging standards.\n      <\/p>\n<div style=\"display:flex; flex-wrap:wrap; gap:16px; margin-top:14px; font-size:0.82rem; color:#cbd5e1;\">\n        <span>\u2713 <strong>Free CAD Dielines (.AI \/ .DXF)<\/strong><\/span><br \/>\n        <span>\u2713 <strong>Drop-Test &#038; ECT Optimization<\/strong><\/span><br \/>\n        <span>\u2713 <strong>PPWR &#038; FSC Compliant<\/strong><\/span>\n      <\/div>\n<\/p><\/div>\n<div style=\"display:flex; align-items:center; align-self:center;\">\n      <a href=\"https:\/\/tadapack.com\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"background:#0284c7; color:#ffffff; padding:12px 24px; border-radius:8px; font-weight:700; font-size:0.95rem; text-decoration:none; display:inline-block; transition:all 0.2s; box-shadow:0 4px 12px rgba(2,132,199,0.35);\"><br \/>\n        Request Engineering Sample &rarr;<br \/>\n      <\/a>\n    <\/div>\n<\/p><\/div>\n<\/div>\n<p><script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@graph\": [\n    {\n      \"@type\": \"Article\",\n      \"@id\": \"https:\/\/tadapack.com\/news\/custom-packaging-boxes-delhi\/#article\",\n      \"headline\": \"Custom Packaging Boxes Delhi: B2B Sourcing & Specs\",\n      \"description\": \"Engineer's guide to sourcing custom packaging boxes in Delhi: ECT grades, GSM boards, PPWR\/EPR compliance, unit costs, and transit testing standards.\",\n      \"mainEntityOfPage\": \"https:\/\/tadapack.com\/news\/custom-packaging-boxes-delhi\/\",\n      \"author\": {\n        \"@type\": \"Person\",\n        \"name\": \"David Chen, PE\",\n        \"jobTitle\": \"Lead Structural Packaging Engineer\",\n        \"worksFor\": {\n          \"@type\": \"Organization\",\n          \"name\": \"TadaPack\",\n          \"url\": \"https:\/\/tadapack.com\"\n        }\n      },\n      \"publisher\": {\n        \"@type\": \"Organization\",\n        \"name\": \"TadaPack\",\n        \"url\": \"https:\/\/tadapack.com\"\n      }\n    },\n    {\n      \"@type\": \"FAQPage\",\n      \"@id\": \"https:\/\/tadapack.com\/news\/custom-packaging-boxes-delhi\/#faq\",\n      \"mainEntity\": [{\"@type\":\"Question\",\"name\":\"What board spec should I ask for when sourcing custom packaging boxes in Delhi?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Specify 3-ply C-flute, 150 GSM kraft liner, ECT 32 lb\/in\u00b2 minimum for standard e-commerce shippers; 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