PEEK这行有个乱象要先点破：市场上挂着"PEEK副牌"卖的货，价格能从每公斤几百元到几十元不等。外行一看都是黄褐色颗粒，分不清谁是谁。有人拿改性PP加填料冒充PEEK，有人把回料切粒染色当真副牌卖。PEEK本身是"塑料黄金"，副牌量极少、辨别极难，不懂行就敢买，等于拿心脏部件的钱买一堆废塑料。今天把国产PEEK副牌的门道说清楚。
今天就把吉林中研高分子、盘锦中润特塑、金发科技这三家国内PEEK头部企业的副牌门道，一次讲透。
PEEK是什么？国产聚合才刚起步
PEEK是聚醚醚酮，特种工程塑料里的"天花板"级别，耐高温长期两百六十度，耐腐蚀、高强度、生物相容，用在航空航天结构件、医疗器械（骨科植入、手术器械）、半导体夹具、汽车轴承齿轮上。它聚合工艺极难，全球长期被英国威格斯、比利时世索科（原索尔维）、德国赢创垄断。
国内PEEK真正做纯树脂聚合的企业不多。吉林中研高分子（中研股份）是国内最大、也是全球第四家做到千吨级产能的PEEK企业，纯树脂聚合为主；金发科技以改性PEEK见长，把PEEK和玻纤、碳纤共混做改性粒料，主打性价比；盘锦中润特塑在PEEK型材、棒板和改性方向有积累，是国内较早做PEEK加工的企业之一。整个国产PEEK盘子才几千吨，和通用塑料完全不是一个量级。
PEEK副牌：熔点和灰分是照妖镜
PEEK副牌，是原厂同一牌号体系里指标小幅偏离的批次。落到PEEK上，副牌最常见的差异点集中在四项：熔点和结晶温度偏移、灰分偏高、分子量波动、色相深浅不一。
为什么这几项关键？PEEK耐温靠的是结晶度和熔点，熔点差十几度，高温下尺寸就不稳；灰分高了，做半导体夹具会污染晶圆；分子量波动，注塑流动性和强度跟着变。鉴别PEEK真假，熔点测试和灰分是最直接的照妖镜，假料一测就现形。
和回料的区别：PEEK回料是型材边角、报废零件再造粒，分子量已经降解，耐温强度掉档；PEEK副牌是原厂原生聚合粒子，只是个别指标小幅偏离。做医疗和半导体件，用副牌是"指标够不够"的问题，用回料是"敢不敢上机"的问题。
吉林中研高分子：国产PEEK纯树脂龙头
中研股份在吉林，科创板上市，是国内PEEK产量最大的企业，全球第四家做到千吨级产能，还是《聚醚醚酮PEEK树脂》国家标准的牵头起草单位。它从核心原料氟酮到聚合、改性、深加工全流程自主，现有千吨级产能并在继续扩产。
中研副牌料的特点是：纯树脂原生聚合，分子结构和正牌一致；批次以熔点和色相小幅偏离为主；适合航空、医疗、半导体领域对PEEK纯树脂有需求、但对个别指标容忍度较高的工业件。高端植入和认证医疗件仍建议正牌。
适用场景：航空结构件、工业轴承齿轮、半导体夹具、医疗器械、型材。
盘锦中润特塑：PEEK型材与加工老牌
盘锦中润特塑在辽宁盘锦，是国内较早从事PEEK、PI等特种工程塑料型材和改性加工的企业，主打PEEK棒、板、管等型材及改性粒料，服务工业耐磨件和耐腐蚀件市场。
中润副牌料的特点是：型材和改性方向积累深，规格齐全；产品以工业耐磨、耐腐蚀件为主；副牌多来自型材锯切边角的再造和批次指标波动，适合非认证、非医疗的通用工业耐磨件。
适用场景：耐磨滑块、密封件、耐腐蚀部件、型材加工、工业结构件。
金发科技：改性PEEK的性价比路线
金发科技在广州，是国内改性塑料龙头，PEEK是它在特种工程塑料方向的高端布局。它的PEEK产品以改性粒料为主，玻纤增强、碳纤增强PEEK用于汽车和电子方向，主打国产替代和性价比。
金发副牌料的特点是：改性PEEK配方成熟，增强牌号选择多；背靠金发庞大改性平台，客户体系完善；副牌以增强比例和熔指小幅波动为主，适合汽车电子结构件、一般工业耐磨件等对成本敏感的国产替代场景。
适用场景：汽车电子结构件、耐磨齿轮、半导体设备部件、国产替代件。
PEEK副牌避坑指南
第一，先测熔点辨真假。PEEK熔点在三百四十度左右，差得远的根本不是PEEK，别拿改性PP冒充的当真货。
第二，灰分和分子量要测。做半导体和医疗件，灰分和分子量不达标会污染产品或影响力学，副牌也要看检测单。
第三，医疗植入和食品接触件别用副牌。植入级PEEK有严格生物相容性认证，必须正牌；副牌只用于工业耐磨、结构件。
第四，量小别贪便宜。PEEK副牌本就稀缺，远低于市场价的"PEEK副牌"十有八九有问题，先拿小样测熔点。
科隆仓库现货｜国产PEEK型材直供
科隆在宁波仓库常备国产PEEK副牌现货，主推品牌覆盖吉林中研高分子、盘锦中润特塑、金发科技三家国内头部企业。主要牌号涵盖纯树脂级、玻纤增强级、型材级多个常用型号，包装分大包装与小包装两种，纯树脂和增强粒料分仓备货。
仓库现货通常在5000吨左右：小包副牌备货800-1000吨，箱装副牌备货300-500吨，大包料/吨包料备货3500-3900吨。
供应保障走先测后签：每批PEEK副牌料到货先做熔点、灰分、分子量三项检测，确认是真PEEK且指标在可用范围再签单；客户可先拿小样做熔点测试和上机验证，通过后再批量拿货。
选型口诀与案例
国产PEEK副牌怎么选？记住四句话：先测熔点辨真假，灰分分子量要看，医疗植入不碰副牌，远低市场价别碰。
马鞍山一家做半导体设备耐磨件的机加工厂，原来一直用进口PEEK棒材加工耐磨滑块，每公斤成本高。今年改用科隆供的金发科技改性PEEK副牌粒料注塑，先拿小样测熔点在PEEK区间、灰分合格，批量上机后做出来的滑块耐磨性和尺寸稳定性都满足设备要求，每件加工成本降了近三成。老板说：半导体设备里的耐磨滑块又不是植入件，熔点对、灰分够，国产副牌完全够用，没必要硬扛进口价。
PEEK there's a problem in this industry that needs to be exposed: goods sold under the "PEEK sub-brand" label on the market can be priced anywhere from a few hundred to several dozen yuan per kilogram. Outsiders can tell at a glance that they're all yellow-brown pellets and can't tell which is who. Some people pass off modified PP with filler as PEEK, while others sell recycled material cut and dyed as real sub-brands. PEEK itself is "plastic gold," with very few sub-brands and extremely hard to identify. If you don't know the trade, buying it is like spending the money of the core component on a pile of waste plastic. Today, let's clearly explain the secrets behind domestic PEEK sub-brands.
Today, let's thoroughly explain the sub-brand secrets of three leading domestic PEEK companies: Jilin Zhongyan Polymer, Panjin Zhongrun Special Plastics, and Kingfa Technology. What is
PEEK? Domestic polymerization is just beginning
PEEK polyether ether ketone, the "ceiling" level among special engineering plastics, with long-term high-temperature resistance up to 260 degrees, corrosion resistance, high strength, and biocompatibility, used in aerospace structural parts, medical devices (orthopedic implants, surgical instruments), semiconductor fixtures, and automotive bearings and gears. Its polymerization process is extremely difficult and has long been monopolized globally by Victres (UK), Sesco (formerly Solvay) (Belgium), and Evonik (Germany).
There are few domestic PEEK companies truly engaged in pure resin polymerization. Jilin Zhongyan Polymer (Zhongyan Co., Ltd.) is the largest domestic and the fourth PEEK company worldwide to achieve a production capacity of 1,000 tons, mainly focusing on pure resin polymerization; Kingfa Technology specializes in modified PEEK, blending PEEK with glass fiber and carbon fiber to make modified pellets, focusing on cost-effectiveness; Panjin Zhongrun Special Plastics has accumulated experience in PEEK profiles, bars, and modification, and is one of the earliest domestic PEEK processing companies. The entire domestic PEEK plate is only a few thousand tons, which is completely different from general-purpose plastics.
PEEK sub-brand: Melting point and ash content are
PEEK secondary brands , representing batches with slight deviations in the same original factory grade system. The most common differences in PEEK are concentrated in four aspects: melting point and crystallization temperature shifts, higher ash content, molecular weight fluctuations, and varying hue depth.
Why are these key points? PEEK's temperature resistance depends on its crystallinity and melting point; if the melting point differs by more than ten degrees, its dimensions become unstable at high temperatures; If the ash content is high, making semiconductor fixtures will contaminate the wafer; When molecular weight fluctuates, injection molding fluidity and strength change accordingly. To identify genuine PEEK, melting point testing and ash content are the most direct mirrors; once the fake material is tested, it becomes clear. Difference between
and recycled materials: PEEK recycled material is the re-pelletizing of profiles and scrapped parts, with molecular weight already degraded and temperature resistance dropped; PEEK secondary products are original original polymer particles, with only slight deviations in certain indicators. For medical and semiconductor components, using secondary materials is a matter of "whether the specifications are sufficient," while using recycled materials is a matter of "whether you dare to put it into the machine."
Jilin Zhongyan Polymer: Leading domestic PEEK pure resin
Zhongyan Co., Ltd. is listed on the STAR Market in Jilin, making it the largest PEEK producer in China, the fourth company worldwide to achieve thousand-ton capacity, and the lead drafter of the national standard for "Polyether Ether Ketone PEEK Resin." It independently operates the entire process from core raw material fluoroketone to polymerization, modification, and deep processing, currently with thousand-ton capacity and continuing to expand. The characteristics of
Zhongyan sub-brand material are: pure resin primary polymerization, with molecular structure consistent with genuine brand; Batch sizes mainly show slight deviations in melting point and hue; Suitable for industrial parts in aerospace, medical, and semiconductor fields with demand for PEEK pure resin but high tolerance for certain indicators. High-end implantable and certified medical devices still recommend genuine brands.
Applicable Scenarios: Aerospace structural parts, industrial bearing gears, semiconductor fixtures, medical devices, profiles.
Panjin Zhongrun Special Plastics: Established brand in PEEK profiles and processing
Panjin Zhongrun Special Plastics is located in Panjin, Liaoning, one of the earliest domestic enterprises engaged in PEEK, PI, and other special engineering plastic profiles and modification processing, focusing on PEEK rods, plates, pipes, and modified pellets, serving the industrial wear-resistant and corrosion-resistant parts market.
Zhongrun Sub-brand Materials are characterized by deep accumulation in profiles and modification directions, with complete specifications; Products mainly focus on industrial wear-resistant and corrosion-resistant parts; Sub-brands mostly come from remanufacturing of profile cutting edges and batch index fluctuations, suitable for general industrial wear-resistant parts that are not certified or medical.
Applicable scenarios: wear-resistant sliders, seals, corrosion-resistant components, profile processing, industrial structural parts.
Kingfa Technology: Cost-performance route of modified PEEK
Kingfa Technology is a domestic leader in modified plastics in Guangzhou, with PEEK as its high-end layout in the specialty engineering plastics sector. Its PEEK products mainly consist of modified pellets, with glass fiber reinforced and carbon fiber reinforced PEEK used in automotive and electronics sectors, focusing on domestic substitution and cost-effectiveness. The characteristics of
Kingfa's sub-brand materials are: mature modified PEEK formulations and a wide selection of reinforced grades; Backed by Kingfa's extensive modification platform, with a complete customer system; Secondary brands mainly have slight fluctuations in enhancement ratio and melting index, suitable for cost-sensitive domestic substitution scenarios such as automotive electronic structural parts and general industrial wear-resistant parts.
Applicable scenarios: automotive electronic structural parts, wear-resistant gears, semiconductor equipment components, domestic substitution parts.
PEEK secondary brand pitfall guide
First, first test the melting point to distinguish genuine from fake. PEEK's melting point is around 340 degrees; if the difference is very far, it is not PEEK at all. Do not pass modified PP as genuine products.
Second, measure ash content and molecular weight. For semiconductors and medical devices, substandard ash and molecular weight will contaminate products or affect the product; sub-brands should also check the test reports.
Third, do not use sub-brands for medical implants and food contact parts. Implant-grade PEEK has strict biocompatibility certification and must be genuine; Secondary brands are only used for industrial wear-resistant and structural parts.
Fourth, small quantities, don't be tempted by low prices. PEEK secondary brands are already scarce; "PEEK secondary brands" priced far below market value are almost always problematic. First, test the melting point with a small sample.
Cologne warehouse in-stock | Direct supply of domestic PEEK profiles
Cologne always keeps domestic PEEK sub-brand stock at the Ningbo warehouse, with main brands covering three leading domestic companies: Jilin Zhongyan Polymer, Panjin Zhongrun Special Plastics, and Kingfa Technology. Main grades include pure resin grade, glass fiber reinforced grade, and profile grade, with packaging available in large and small packaging, with pure resin and reinforced pellets stocked separately.
Warehouse stock is usually around 5,000 tons: small sub-brand stocks 800-1,000 tons, containerized sub-brand stocks 300-500 tons, large packages/ton stocks 3,500-3,900 tons.
Supply assurance follows a first-test-then-sign approach: each batch of PEEK sub-brand material is tested first for melting point, ash content, and molecular weight, confirming it is genuine PEEK and within the usable range before signing the order; Customers can first take samples for melting point testing and machine validation, then purchase in bulk after passing.
Selection tips and case studies
How to choose domestic PEEK sub-brand? Remember these four points: first test melting point to distinguish real from fake, pay attention to ash molecular weight, don't touch secondary brands for medical implants, and avoid them at prices far below market price.
Ma'anshan is a machining factory for wear-resistant parts for semiconductor equipment. Previously, imported PEEK rods were used to process wear-resistant sliders, which cost per kilogram was high. This year, they switched to Kingfa Technology's modified PEEK sub-brand granular injection molding supplied by Cologne. They first tested the melting point within the PEEK range with qualified ash content. After mass production, the sliders met equipment requirements for wear resistance and dimensional stability, reducing processing costs by nearly 30% per piece. The boss said: Wear-resistant sliders in semiconductor equipment aren't implants; the melting point is right and the ash content is sufficient. Domestic secondary brands are more than sufficient, so there's no need to force import prices
