- Hirota Paper (HK) Ltd
- Address:Unit C, 7/F Wah Fai Industrial Building, No.4 Sze Shan Street, Yau Tong, Kowloon, Hong Kong, Hong Kong, Hong Kong
- Dongguan Jianchen Co., Ltd
- Address:Fuhong Office Building,langbei road,Changping Town, Guangdong, Other, Hong Kong
- Kay's Designs International Ltd.
- Address:Hong Kong
- Rhombus Co Ltd
- Address:suhang, HongKong, Hong Kong
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