Import 3u Cfl — Buy in Bulk from Supplier in China

The 3U CFL is a compact fluorescent lamp with a triple-tube configuration that delivers higher lumen output per unit volume than single or twin-tube designs. Shanghai Houlong Electronics Technology Co., Ltd. lists this lamp for B2B buyers seeking energy-efficient lighting for residential, commercial and light industrial installations. The 3U shape refers to three parallel glass tubes formed into a U-bend configuration, a geometry that maximises surface area for phosphor coating within standard lamp envelopes. This listing originates from Shanghai, China, with the supplier located at Room 2109, Building B, 317 Xian Xia Road in the Changning district.

The lamp typically operates on standard mains voltage and uses a built-in electronic ballast to drive gas discharge through mercury vapour inside the coated glass tubes. The phosphor coating converts ultraviolet emission into visible light, with tri-phosphor blends now standard for colour rendering indices above 80 Ra. Typical 3U CFL offerings in this wattage class range from 11 W to 30 W rated power, replacing incandescent equivalents of 40 W to 150 W. Glass tube diameters are commonly 12 mm or 14 mm (T4 or T5), with overall lengths varying by wattage and base type. The supplier does not state specific tube diameters, phosphor composition or mercury content in this listing; buyers should request these values to verify compliance with target market regulations.

Primary applications include ambient lighting in offices, retail showrooms, hotels and residential developments where fixture space is constrained but luminous flux requirements remain high. The 3U format fits narrower shades and downlight housings than spiral CFLs of equivalent output. Buyers typically specify colour temperature (2700 K warm white through 6500 K daylight), base type (E27, E14, B22 or GU10), and rated lamp life. Shanghai Houlong indicates ISO and CE certification for this product, though the specific standards referenced are not itemised here. Trade terms mentioned include FOB and CIF, with L/C and T/T payment options. The supplier does not disclose MOQ, lead time or packaging details in this listing, so buyers must confirm these directly.

Shanghai Houlong Electronics Technology Co., Ltd. is registered at Room 2109, Building B, 317 Xian Xia Road, in Shanghai's Changning district (postal code 200051). The company holds a harbor-tier trust designation on the sourcing platform, which is an entry-level verification tier. Its response rate is recorded at 0.00 percent with an average response time of zero hours, indicating no platform-mediated inquiry responses have been logged. Buyers should treat this as a signal to conduct independent due diligence on communication reliability and order responsiveness.

The listing describes the supplier as offering ISO and CE certified 3U CFL products, though it does not name the specific certifying bodies, certificate numbers, or the scope of certification. No factory size, year of establishment, annual revenue, employee count, or named client references appear in the profile. The company states acceptance of FOB and CIF shipping terms and L/C or T/T payment methods. Buyers should verify manufacturing capability, quality system documentation, and prior export experience before committing to volume orders.