There is a huge market gap for paper cups in the paper cup machine industry. 解析：这里“纸杯机之”可理解为在纸杯机所属的行业范畴内，用"in the paper cup machine industry"来体现这种领域关联；“市场缺口大”直接译为"there is a huge market gap"，简洁且准确地表达了市场供需不平衡、存在较大需求空缺的含义。

The technology for producing disposable paper cups is simple, mainly completed by paper cup machines. A paper cup forming machine is a multi-station automatic forming machine that can produce various paper cups through continuous processes such as automatic paper feeding, sealing, and embossing.

Large gap in paper cups: At present, there are more than 100 manufacturers producing pulp degradable tableware in China, with an annual production capacity of 3 billion. However, statistics show that the national annual consumption of disposable lunch boxes, together with instant noodle bowls, vegetable plates, paper cups, etc., is about 10 billion. At present, there is a market gap of about 7 billion paper tableware. Among them, the gap of disposable paper cups accounts for more than 3 billion.