Qingdao Yunzhou Biochemistry Co. Ltd.
- Producer of chitin and chitosan. Product specifications.
- http://www.qdyunzhou.com/

Qingdao Saideli Ceramic Pigment Co., Ltd.
- Manufacturer of ceramic pigments, ceramic glaze lead-free pigments, low-temperature and hot-bent glass pigments.
- http://www.cerdele.com/en/index.htm

Boste
- Manufacturer of patented disinfectant without color, odor, irritation, and corrosion. Product introduction, facilities, and anti-bacteria concept.
- http://www.boste.com

Qingdao Deyu Jinling PU Co. Ltd.
- Supplier of PU materials, products and technology services. Product information.
- http://www.deyupu.com/indexe.htm

Qingdao SGR Carbon Co., Ltd.
- Manufacturer of carbon and graphite products. Product specifications.
- http://www.sgrcarbon.com

Qingdao Haiyang Chemical Co. Ltd
- Silica gel, sodium silicate, blue gel and white carbon. Includes information on the company's organisation, research, sales and investment.
- http://www.haiyangchem.com/

Qingdao Haili Graphite Carbon Co. Ltd.
- Producer of graphite flakes. Company and product information.
- http://www.qd-haili.com/indexe.htm

Qingdao Guiyuan Chemicals Co., Ltd.
- Manufacturer and exporter of silica gel products.
- http://www.silica-gelchina.com/english/index.htm