... we can offer any kinds of envelopes,envelope making machines, cd sleeves ect. material : any material is available, ( ... and seal ,self adhesive, ect) ,envelope making machines,cd sleeves/bags, red packets,tea bags, document bags,greeting ... clients:Most famous companies like ICBC, China Southern Power, Bank of China,China Mobile ect, are our regular customers, ... on the bases of mutual benefits. CD sleeve