Shenzhen Qicai Guohong Technology Co., Ltd. is based in China and lists portable air compressors, an air pump with flashlight and SOS functions, and a tire sealant machine on Global Trade Plaza. The compressors combine tire-pressure detection, inflation, LED lighting and USB power-bank output, with built-in lithium-ion batteries in series configurations and digital pressure gauges. The air pump integrates a white LED with SOS signalling, a red/blue warning LED board, digital pressure readout and USB charging. The tire sealant machine integrates sealant injection, pressure detection, inflation and night lighting in a single unit designed for M1-class passenger cars.