主要原因是白墨的质量不好，再就是粘度太小了。
The main reason is that the quality of white ink is not good, and then the viscosity is too small.
软件支持：专业UV白墨打印软件，吴川包装彩盒打样机，支持白彩同步打印，快速出样；
The software supports: UV white ink professional printing software, white ink and color ink to print simultaneously, fast proofing;
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