PET preform injection mold cavity quantities are standardized and graded according to production scale, product type, and customer output demands, with mainstream industry configurations including 16, 24, 32, 48, 64, thiab 96 kab noj hniav, covering all production scenarios from small workshop trial production to large factory automated mass production. Each cavity quantity corresponds to matched machine tonnage, lub sij hawm voj voog, and production …