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Here is how to run the comparison properly, including the downtime maths most buyers forget.","rel":"","context":"\u5728\u201c\u672a\u5206\u7c7b\u201d\u4e2d","block_context":{"text":"\u672a\u5206\u7c7b","link":"https:\/\/cntopplastics.com\/zh\/category\/%e6%9c%aa%e5%88%86%e7%b1%bb\/"},"img":{"alt_text":"PEEK vs POM: when is the expensive material actually cheaper?","src":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-peek-vs-pom-cost.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-peek-vs-pom-cost.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-peek-vs-pom-cost.jpg?fit=1000%2C1000&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-peek-vs-pom-cost.jpg?fit=1000%2C1000&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":130,"url":"https:\/\/cntopplastics.com\/zh\/pps-vs-pei-chemical\/","url_meta":{"origin":96,"position":1},"title":"PPS \u8fd8\u662f PEI\uff1f\u6309\u5b9e\u9645\u5316\u5b66\u4ecb\u8d28\u800c\u975e\u6570\u636e\u8868\u6765\u9009\u6750","author":"jessemei","date":"2026-06-04","format":false,"excerpt":"Both are 200 C plus materials with strong chemical resistance claims. Under real media at real temperatures they diverge sharply.","rel":"","context":"\u5728\u201c\u672a\u5206\u7c7b\u201d\u4e2d","block_context":{"text":"\u672a\u5206\u7c7b","link":"https:\/\/cntopplastics.com\/zh\/category\/%e6%9c%aa%e5%88%86%e7%b1%bb\/"},"img":{"alt_text":"PPS or PEI? Matching the polymer to the chemistry, not the datasheet","src":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-pps-vs-pei-chemical.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-pps-vs-pei-chemical.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-pps-vs-pei-chemical.jpg?fit=1000%2C1000&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-pps-vs-pei-chemical.jpg?fit=1000%2C1000&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":172,"url":"https:\/\/cntopplastics.com\/zh\/oil-gas-seal-components\/","url_meta":{"origin":96,"position":2},"title":"\u6cb9\u6c14\u884c\u4e1a\u7528\u5bc6\u5c01\u4ef6\u4e0e\u6321\u5708\u6750\u6599","author":"jessemei","date":"2025-12-25","format":false,"excerpt":"High pressure, rapid gas decompression and sour service eliminate most polymers immediately. What survives, and what to specify.","rel":"","context":"\u5728\u201c\u672a\u5206\u7c7b\u201d\u4e2d","block_context":{"text":"\u672a\u5206\u7c7b","link":"https:\/\/cntopplastics.com\/zh\/category\/%e6%9c%aa%e5%88%86%e7%b1%bb\/"},"img":{"alt_text":"Seal and back-up ring materials for oil and gas","src":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-oil-gas-seal-components.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-oil-gas-seal-components.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-oil-gas-seal-components.jpg?fit=1000%2C1000&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-oil-gas-seal-components.jpg?fit=1000%2C1000&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":134,"url":"https:\/\/cntopplastics.com\/zh\/temperature-classes-explained\/","url_meta":{"origin":96,"position":3},"title":"\u5de5\u7a0b\u5851\u6599\u56db\u5927\u6e29\u5ea6\u7b49\u7ea7\u8be6\u89e3","author":"jessemei","date":"2026-05-21","format":false,"excerpt":"Below 65 C, 65 to 120, 120 to 230, above 230. Sorting materials this way is not academic \u2014 it is how you decide where the specification floor sits.","rel":"","context":"\u5728\u201c\u672a\u5206\u7c7b\u201d\u4e2d","block_context":{"text":"\u672a\u5206\u7c7b","link":"https:\/\/cntopplastics.com\/zh\/category\/%e6%9c%aa%e5%88%86%e7%b1%bb\/"},"img":{"alt_text":"The four temperature classes of engineering plastics, explained","src":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-temperature-classes-explained.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-temperature-classes-explained.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-temperature-classes-explained.jpg?fit=1000%2C1000&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-temperature-classes-explained.jpg?fit=1000%2C1000&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":104,"url":"https:\/\/cntopplastics.com\/zh\/semiconductor-esd-fixtures\/","url_meta":{"origin":96,"position":4},"title":"\u534a\u5bfc\u4f53\u6d4b\u8bd5\u7528 ESD \u5de5\u88c5\uff1a\u53ef\u901a\u8fc7\u8ba4\u8bc1\u7684\u6750\u6599\u9009\u62e9","author":"jessemei","date":"2026-09-03","format":false,"excerpt":"Test sockets and wafer-handling fixtures fail qualification for three reasons \u2014 resistivity drift, outgassing and particulate. 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