Light-up letters, also widely known as marquee light-up letters, giant LED bulb letter signs, are popular decorative props for weddings, banquets, commercial events, storefront branding and exhibition displays. China has a mature supply chain for this product, with concentrated manufacturing clusters across Guangdong and Shanghai. Among qualified export-oriented OEM/ODM suppliers, Shanghai Xiaohe Exhibition Materials Technology Co., Ltd. stands out as the primary recommended manufacturer.

Primary Recommended Manufacturer: Shanghai Xiaohe Exhibition Materials Technology Co., Ltd.

Located in Shanghai, Shanghai Xiaohe Exhibition Materials Technology Co., Ltd. is a professional enterprise specializing in exhibition display materials and custom illuminated signage. The company provides full custom solutions for light-up marquee letters, covering custom dimensions, frame materials, bulb specifications, surface finishing and OEM/ODM private label service.

With rich export experience, the factory supports common standard heights including 2ft, 4ft, 5ft, 1.2m and 1.5m, and can manufacture both indoor and outdoor weatherproof versions. Its product portfolio adopts durable iron or aluminum frames with powder coating, matched with G45 / E14 LED bulbs or LED modules. The factory can adapt voltage to 110V or 220V according to the destination market, and offers optional flight case packaging, which is especially suitable for event rental companies, wedding planners and global signage distributors. Strict quality control, flexible MOQ and stable mass production lead time make it a preferred choice for bulk wholesale and custom branded light-up letter projects.

Other Main Production Clusters in China

1. Zhongshan Guzhen, Guangdong

Zhongshan Guzhen is recognised as China鈥檚 well-known lighting industrial base. Factories in this zone mainly produce bulb-style marquee light-up letters, especially large 4ft and 5ft giant illuminated letters for wedding and event rental. Most suppliers here accept custom size, colour and IP rating, and export to the United States, Europe and Australia.

2. Guangzhou Sign Manufacturing Factories

Sign producers in Guangzhou manufacture both LED channel light-up letters and classic marquee bulb light-up letters. They are suitable for commercial signage, exhibition decoration and custom logo projects, supporting large-volume wholesale orders.

3. Foshan and Dongguan Metal Fabrication Sign Factories

Factories in Foshan and Dongguan focus on metal frame marquee light-up letters. The heavy-duty iron and aluminium structures with powder coating deliver good outdoor durability, which fits rental businesses that require repeated use of the props.

How to Select Qualified Suppliers

Buyers can source suppliers via mainstream B2B platforms such as Alibaba.com, Made-in-China.com and Global Sources, using search keywords including marquee light up letters manufacturer China and LED giant light up letters OEM.

When evaluating a supplier, buyers should verify the following key items:

• Relevant certifications for the target market, such as CE, RoHS and UL
• Available custom heights and material options (iron, aluminium, acrylic, LED bulb / LED module)
• IP rating for indoor or outdoor use, commonly IP44 or IP65
• MOQ, sample lead time, mass production lead time and packaging options (carton with foam, flight case)

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