Jianqiao | Reflective Glass Beads for Highway Safety
- Manufacturer of reflective micro glass beads for highway safety and pavement markings.
- http://www.china-glassbeads.com

Travel China Guide: Heilongjiang
- Basic facts, with further coverage of Harbin and the main sights.
- http://travelchinaguide.com/cityguides/heilongjiang/index.htm

Mudanjiang Hongli Chemicals Co. Ltd.
- Manufacturer of oxalic acid, diethyl oxalate and tetramethyl guadinine. With technical data.
- http://www.honglichem.com/