Shuanghui has long term contracts with the following raw material suppliers, printing Ink from Yip's Hong Kong, glue from Zhejiang Huangyan Huaguang Resin Ltd, Jiangsu Changzhou Jinhai Plastic Industry Group Ltd's BOPP, Zhejiang Europe and Asia Films Ltd's PET and Hebei Cangzhou East Plastic Group Inc's BOPA.

These companies have well-known brands in China and their products have been certified by government agencies which are responsible for approving the quality of food packaging.

(There are some raw materials samples below)