Bottle-grade polyester chips are suitable for making the packing bottles for pure water, natural mineral water, distilled water, drinking water, flavoring and candy containers, PET sheet material etc. The product features low heavy metal content, low content of acetaldehyde, good color value, stable viscosity. With a unique process recipe and production technology, the brand of product possesses excellent processing features, low processing temperature, wide scope in processing, excellent transparency and high in finished product rate. In making bottles, the product has a small degradation and low content of acetaldehyde. While ensuring safety and hygiene, it can effectively keep the respectively unique taste of purified water, mineral water and distilled water.