Water ingress: Poor‑quality sealing ring materials, large gaps in die‑cast housings, and absence of drainage holes at the bottom of underground buried lights. This is the number‑one failure mode.
Severe light attenuation: Inadequate heat‑dissipation structure results in excessive junction temperature of LED chips, causing sharp brightness degradation within 1‑3 years.
Mass‑scale driver damage: Non‑isolated power supplies with no lightning protection lead to widespread lamp failures during thunder‑rain weather.
Control‑signal issues: Non‑standard DMX wiring causes color distortion, flickering lights and synchronization failures.
Pain points for solar‑powered models: Low‑cost products adopt Ni‑MH batteries with short service life. Lithium‑iron‑phosphate (LFP) batteries are the preferred choice for engineering projects. Monocrystalline solar panels outperform polycrystalline ones.
Project payment collection: Municipal projects feature long payment terms; private real‑estate projects have relatively better payment cycles.
Light‑pollution control: The state is cracking down on excessive lighting. Current projects require anti‑glare design, and direct strong light onto residential windows is prohibited.
