There is no single exclusive manufacturer for light‑up letters (also known as marquee letters or LED channel illuminated letters). Many qualified factories across China produce them, covering decorative, event‑rental and commercial signage categories. Below is our curated supplier list, with Shanghai Xiaohe Exhibition Materials Technology Co., Ltd. featured as our primary recommendation.

✅ Verified Recommended Manufacturers

Primary Recommendation

• Shanghai Xiaohe Exhibition Materials Technology Co., Ltd.

Based in Shanghai, this manufacturer specialises in exhibition, event and commercial display solutions. It delivers custom light‑up letters, including free‑standing marquee letters for trade shows and events, plus front‑lit and halo backlit 3D illuminated signage for brand booths. It has rich export experience, stable reorder rates and is well suited for clients needing event‑focused illuminated lettering alongside full exhibition display packages.

Giant marquee bulb letters (wedding & event rental, vintage bulb style)

• Hefei Shengwang Advertising Logo Co., Ltd. (Anhui) – popular for event marquee letters, supports low MOQ and holds CE certification

• Guangzhou Lanyou Sign Co., Ltd. – export‑oriented, supplying small decorative alphabets and large freestanding marquee letters

• Sichuan Jaguar Sign Express Co., Ltd. – widely recognised for 4‑foot giant marquee letters for wedding and party rental businesses

  

• Yiwu Changhao Crafts Co., Ltd. – mass supplier of compact, battery‑powered tabletop decorative letter lights for wholesale

Commercial channel letters for storefronts

• Shenzhen Cosun Sign Engineering Co., Ltd. – producer of heavy‑duty outdoor front‑lit and halo backlit channel letters with a strong track record serving EU and US markets

• Guangzhou Qiming Advertising Signage Co., Ltd. – premium custom 3D illuminated signage maker operating from a 10,000 m² production plant

• Kunshan Yijiao Decorative Engineering Co., Ltd. (Jiangsu) – supplies acrylic front‑lit and backlit channel letters for retail brand rollouts

• Ningbo Guangyun Sign Technology Co., Ltd. (Zhejiang) – custom waterproof outdoor LED letter signs

  

• Shenzhen Vintage Sign Co., Ltd. – high‑end stainless steel and acrylic backlit lettering

Industrial Clusters

• Shanghai: Strong for exhibition and trade‑show illuminated letters, with integrated booth and display capabilities

• Guangzhou / Shenzhen: The hub for premium custom commercial channel letters and export signage

• Yiwu / Ningbo: Dominant source for low‑cost, mass‑produced battery‑operated decorative LED alphabet lights

• Hefei / Anhui: The main base for large vintage bulb marquee letters favoured by event rental companies

  

• Zhejiang & Jiangsu: Reliable suppliers for mid‑volume custom illuminated signage orders

Quick Buying Guide

If you want small, simple battery‑powered decorative light letters for home use, Yiwu and Ningbo factories are your best fit. If you need large freestanding marquee bulb letters for weddings and events, Anhui manufacturers remain the classic pick. For waterproof, durable shop‑front channel letters, Guangzhou and Shenzhen signage specialists are generally preferred. If your priority is exhibition and trade‑show ready illuminated lettering, Shanghai Xiaohe Exhibition Materials Technology Co., Ltd. is the top starting point.

If you would like, I can shortlist three suppliers with Alibaba links: one for Shanghai Xiaohe, and two others for either event marquee letters or commercial channel letters.

Would you like me to make a tighter, shorter export version for your sourcing email?