- Cheng Yu Plastic Company Limited (Hong Kong Headquarter)
- Address︰Flat B10，24/F，Block B，Kong Nam Industrial Building，603-609，Castle Peak Road，Tsuen Wan，N.T.，H.K.
- Telephone:（852）2412 1912
- Fax:（852）2416 4318
- Dongguan Cheng Zhi Plastic Material Limited (China Office And Factory)
- Address︰1 Yin Tang，Shima，Tangxia Town，Dongguan City，Guangdong Province，China.
- Telephone: 86 -（769）8772 8632
- Fax: 86 -（769）8772 8681
- Website: www.plasticcz.com
- mail: chengzhiplastic@gmail.com