G-Rainbow Technology (Shenzhen) Co., Ltd. is a leading Chinese factory specializing in acrylic products and plastic mold injection. Established in 2013, the company has over 12 years of experience in manufacturing high-quality mahjong sets, dominoes, Rummy, backgammon, XO, and other entertainment products for global markets. With eight modern production lines, we offer customized designs to meet diverse market needs.
We handle all processes in-house, from color customization and material cutting to bonding, polishing, and coloring. Our mahjong sets are know for vibrant ink, no color bleeding, and perfect fillings, making us the trusted manufacturer for top mahjong brands in the U.S.