R&R Customs Brokerage, LLC

Jason Wan-Hau Chin is a licensed U.S. customs broker based in Diamond Bar, California, situated in the greater Los Angeles metro area. He serves as Director at Y&J Customs Brokerage, providing customs clearance and import compliance services to businesses operating through Southern California's major trade gateways. Diamond Bar's location places him within close proximity to the ports of Los Angeles and Long Beach — among the busiest container ports in the United States — making him well-positioned to assist importers moving goods from Asia and the Pacific Rim. His CBP license (filer code NRU) authorizes him to file entries on behalf of importers across the country.

Cathy Cheuk Yu is a licensed U.S. customs broker based in Diamond Bar, California, serving importers throughout the Los Angeles metropolitan area and Southern California region. Operating under filer code N3V, Cathy provides customs clearance services for commercial shipments entering through major West Coast ports including Los Angeles and Long Beach. With a strategic location in the Inland Empire, she supports businesses importing goods from Asia-Pacific markets, handling entry documentation, compliance review, and coordination with U.S. Customs and Border Protection. Importers seeking personalized customs brokerage services in the greater Los Angeles area can reach Cathy directly at 909-616-0060.

Dongyang Li is a licensed U.S. customs broker based in Diamond Bar, California, serving importers throughout Southern California. Operating with filer code N3G, Dongyang Li provides customs clearance services for businesses importing goods through West Coast ports. Diamond Bar's strategic location in the San Gabriel Valley offers proximity to the Ports of Los Angeles and Long Beach, major air cargo facilities, and key distribution corridors. Importers working with Dongyang Li benefit from direct access to a licensed professional who understands the complexities of U.S. Customs and Border Protection regulations and can facilitate efficient cargo release.