There are 10 imported Sacmi bottle cap production lines to produce 28-caliber, 30-caliber, 38-caliber, 1881-caliber, and 45-caliber bottle caps, with an annual production capacity of 1.5 billion at most. There are 15 Yizumi preform production lines that produce 28-caliber, 30-caliber, 38-caliber, 1881-caliber, and 45-caliber preforms with an annual production capacity of at most 800 million.