... &ODM are welcome 3)logo printing and item color can be customized 4)Fa cheaper item whistle keychain/aluminum whistle keyring/promotional ... whistle 1.Can be used for sport whistle and toy2.Item color in white,yellow,red,blue,green,purple,Which can ... print customer's logo,it is good for promotions5.The item meet CE&ROHS standard6.Very durable product mode of metal7 ...