# Haosheng (昊晟) — PET & PVC Heat Shrink Tubing Manufacturer > Dongguan Haosheng New Materials Technology Co., Ltd. (昊晟) is a direct manufacturer — not a trading company — of PET and PVC heat shrink tubing, based in Qingxi Town, Dongguan, Guangdong, China. We make exactly two product lines. Nothing else. PVC heat shrink tubing — insulation sleeves for aluminum electrolytic capacitors, with a printable surface for capacitor spec markings. Shrink ratio 2:1, continuous operating temperature -40°C to +105°C, flame rating UL224 VW-1 (HB available). PET heat shrink tubing — higher-temperature insulation sleeves for cylindrical lithium battery cells (18650, 21700, 26650, 32700, 4680) and for capacitor insulation. Shrink ratio 2:1. Typically thinner-walled than PVC. Typical applications: aluminum electrolytic capacitor outer insulation and printed markings; cylindrical lithium cell insulation for ESS, power tool, e-bike and e-motorcycle battery packs; inductor and component insulation. Certification and compliance: RoHS compliant (EU 2011/65/EU), REACH compliant (SVHC free); PVC grade meets UL224 VW-1. Commercial terms: MOQ 100 m for stock sizes, 1,000 m for custom colors, 3,000 m for printed sleeves. Sample lead time 3–5 working days, production 3–5 working days (custom colors 7–10 days, printed 5–7 days). Payment by T/T: 50% deposit + 50% before shipment for standard items, 70% deposit + 30% balance for custom colors and printed sleeves. FOB Shenzhen or Guangzhou. OEM and ODM supported, printing in white, black, gold and silver. Contact: hsxcl118@gmail.com · WhatsApp +852 5776 5882 · Ms. Wang +86 137 1521 3303 ## 页面 - [Cylindrical Cell Insulation Sleeves | Sizing for 18650 21700 32700 | Haosheng](https://www.hsshrink.com/battery-solutions/) - [PET Heat Shrink Tubing | Capacitor Insulation Sleeve | Haosheng](https://www.hsshrink.com/pet-heat-shrink-tubing/) - [PVC Heat Shrink Tubing | UL Recognized Insulation Sleeve | Haosheng](https://www.hsshrink.com/pvc-heat-shrink-tubing/) - [Heat Shrink Tubing Services | Custom PET and PVC Solutions | Haosheng](https://www.hsshrink.com/services/) - [PET and PVC Heat Shrink Tubing Manufacturer | Haosheng New Material](https://www.hsshrink.com/) - [About Haosheng New Material | PET and PVC Heat Shrink Tubing Factory](https://www.hsshrink.com/about/) - [Contact Haosheng | PET and PVC Heat Shrink Tube Manufacturer](https://www.hsshrink.com/contact/) - [Blog](https://www.hsshrink.com/blog/) ## 文章 - [32700 and 32140 Heat Shrink Sleeve Sizing: One Size Covers Both Cells](https://www.hsshrink.com/2026/10/21/32700-and-32140-heat-shrink-sleeve-sizing/) - [Capacitor Heat Shrink Sleeve Size Chart: A Practical Guide to Matching IDs to Body Diameters](https://www.hsshrink.com/2026/10/21/capacitor-heat-shrink-sleeve-size-chart/) - [PET Heat Shrink Tubing Storage and Shelf Life: What Changes Over Time](https://www.hsshrink.com/2026/09/29/pet-heat-shrink-storage-and-shelf-life/) - [Why Your Heat Shrink Sleeve Wrinkles After Shrinking](https://www.hsshrink.com/2026/09/29/why-heat-shrink-sleeve-wrinkles-after-shrinking/) - [UL224 VW-1 vs UL94: What Flame Ratings Mean for Heat Shrink Sleeves](https://www.hsshrink.com/2026/09/29/ul224-vw1-vs-ul94-flame-ratings/) - [Quality Control Testing Standards for Heat Shrink Tubing: The Tests That Actually Matter](https://www.hsshrink.com/2026/07/24/quality-control-testing-standards-for-heat-shrink-tubing/) - [PET vs PVC Heat Shrink Tubing: A Property-by-Property Comparison for Insulating Sleeves](https://www.hsshrink.com/2026/07/24/pvc-vs-pet-heat-shrink-tubing-which-material-for-your-application/) - [PET vs PVC Heat Shrink Tubing: A Property-by-Property Comparison for Insulating Sleeves](https://www.hsshrink.com/2026/07/24/pet-heat-shrink-tubing-selection-guide-for-capacitor-insulation/) > ## 常见问题（FAQ） ### PET 与 PVC 热缩管怎么选？ PVC 更柔软、收缩温度更低、印刷清晰、性价比高，适合铝电解电容套管（需要印额定电压与容量标识）。PET 耐温更高、壁更薄、多数为无卤，适合 18650/21700/32650/32700/4680 圆柱电芯绝缘，以及 ESS、电动工具、电动两轮车电池包。两者收缩比都是 2:1。 ### 铝电解电容套管怎么选直径？ 先量电容本体外径，再选供给内径略大于它的规格。2:1 收缩比下，供给 4mm 的管收缩到约 2mm，所以一只 2-4mm 本体的电容用同一个规格就能覆盖。套上后应是轻微过盈配合，不应松垮。 ### UL224 VW-1 和 UL94 有什么区别？ UL224 是绝缘线管的标准，VW-1 是其阻燃等级：离火后 60 秒内自熄且无滴落。UL94 是塑料外壳的标准，V-0/V-1/V-2 基于 2.0mm 试样测试。两者不可互换。电容绝缘套管通常要求 UL224 VW-1。 ### 是否有无卤版本？ 有。PVC 等级可提供无卤版本，通过 EN 50267 / IEC 60754 检测，溴系阻燃剂与总卤素含量均受控。请在询价时明确注明 halogen free 要求。 ### 32700 和 32140 能用同一规格吗？ 可以。32140 与 32700 外径同为 32mm，差别只在高度。用现成的 32700 规格按 140mm 裁切即可用于 32140，无需开新模具。 ### MOQ、交期与付款方式？ 常规现货 MOQ 100 米；定制颜色 1000 米；印刷 logo 3000 米。样品 3-5 个工作日，量产 3-5 个工作日（定制色 7-10 天，印刷 5-7 天）。付款电汇 T/T：常规 50% 定金 + 50% 发货前付清；定制色与印刷款 70% 定金 + 30% 尾款。FOB 深圳或广州，支持 OEM 与 ODM。 ### 套管起皱是什么原因？ 加热过快或不均匀时，外壁先收缩而内壁未充分软化，就会起皱。使用可控热风隧道或热风枪最低档，套件保持转动，让收缩前沿沿周向均匀推进；同时收缩比需落在 2:1 设计范围内。