一个数字先放这：5G手机里那根越来越小的天线，机身里高频信号的传递，越来越多地靠一种液晶聚合物来扛——它就是LCP。全球LCP树脂市场高度集中，前六大生产商攥走了约七成产能，其中三家国外大厂就占了半壁江山。
很多人没意识到，你手里的手机薄成现在这样，背后站着的就是LCP。它能注塑成毫米级薄壁、高频介电稳定、耐热回流焊，连接器、天线、高速接插件都靠它。可恰恰是这种"越做越薄、越做越密"的料，副牌一旦选歪，高频性能就开始飘。
陕西渭南有家做5G通信天线与高频连接器的厂，去年一批LCP副牌，熔指对上了就上机，打出来尺寸没问题，可量产抽检发现介电常数批次间差了零点几个点，几个高频批次天线谐振偏了，整批返工。问题不在"LCP能不能用副牌"，在你知不知道该盯哪个数。今天把LCP副牌讲透。
LCP是什么，谁在供
LCP，学名液晶聚合物（Liquid Crystal Polymer），高温下能形成液晶态的芳族聚酯，流动极薄、耐热、尺寸稳、高频介电性能好，是5G天线、高速连接器、薄壁电子件的专用料。它看家的本事是"越薄越好流、越细越好成型"，手机里那点精密空间就靠它。
全球LCP高度集中，按市场份额与产能口径（多家行业机构交叉核验，2025—2026）：
塞拉尼斯（Celanese，美国）：代表牌号Vectra LCP，份额居前，覆盖高频到车载电装，品级多；
住友化学（日本）：代表牌号Sumikasuper，其官网自称全球LCP份额约两成七、居第二位，爱媛厂2023年扩产约三成后建成年产一万二千吨体制；
宝理塑料（Polyplastics，日本）：代表牌号LAPEROS，份额约一成半上下，薄壁精密电子件见长，2025年又扩了LH、TF等高流动品级。
三家之外，东丽Siveras、Kuraray等也是参与者，国产料正在追赶，但主流高端还是这三家国外大厂。
副牌是什么，数字上差多少
LCP副牌的概念，和其他特种料一脉相承。
定义：同一厂家同一牌号里，出厂检验没完全踩中正牌指标的那部分。同一批聚合料，合格贴正牌，个别指标小幅浮动就是副牌。
四大来源：开停车头尾料、牌号切换过渡料、工艺波动致熔指/色相/某一项小幅超标的批次、副线尾料。
它仍是原厂原生聚合粒子，分子结构和正牌一致。和回料、再生料的边界：
| 类型 | 来源 | 品质 | 典型用途 |
|---|
| 正牌 | 原厂达标批次 | 全指标达标、高频性能稳 | 高频天线、高速连接器 |
| 副牌 | 原厂未完全达标批次 | 个别指标小幅偏离，基材同源 | 一般连接器、非高频结构件 |
| 回料/水口料 | 加工边角料再造粒 | 已受过一次热历史 | 低要求制品 |
| 再生料 | 废旧塑料回收造粒 | 性能波动大 | 低端填充 |
塞拉尼斯Vectra：高频那档的主力
塞拉尼斯Vectra是LCP里品级最全的一档，覆盖高频、车载电装、连接器，能做到几十种牌号，高频性能调校成熟。它的副牌浮动项，常见是熔指和流动长度，介电主干性能相对稳。
做一般连接器、非最高频的结构件，Vectra副牌够用；做5G高频天线、高速接插件，介电性能要卡到小数点后几位的件，必须正牌或精选副。包装分大包装、小包装，按批量领。
适用场景：高频连接器、车载电装件。
住友Sumikasuper：自称第二的老牌
住友化学Sumikasuper是LCP行业的老牌玩家，官网自称全球份额约两成七、居第二位，爱媛厂2023年扩到年产一万二千吨。它在5G、6G高速通信和车载电装方向布局深，膜级、级进模成型都有。
它的副牌流动性和色相浮动常见，批次相对整齐。做通信结构件、非最高频的天线内件，这档副牌值得碰。介电要求特别严的高频件，照样得用正牌。
适用场景：通信天线件、车载电装。
宝理LAPEROS：薄壁精密件见长
宝理塑料LAPEROS主打薄壁、精密电子件，2025年新出的LH、TF品级把流动性和薄壁成型又往前推了一步，手机、精密连接器用得多。
它的副牌流动长度浮动常见，适合做对流动性要求没那么苛刻的一般薄壁件。做又薄又密的手机级精密件，副牌别赌。三家凑一起，就是LCP这个品类能找到的主要国外原厂来源。
适用场景：薄壁电子件、精密连接器。
避坑：高频件该盯哪个数
LCP副牌做5G通信件，三个坑。
一、盯介电。做高频天线、高速连接器，介电常数和介质损耗必须按批次测到小数点后几位，别只看熔指上机。
二、流动性对薄壁。副牌常飘流动长度，薄壁精密件先打样验证充模，别凭经验。
三、批次一致。同一副牌不同批介电和流动可能差，连续高频件要留样跟批。
包装只分大包装、小包装，别被"定制分装"加价。
科隆仓库现货｜LCP数据
主推品牌：塞拉尼斯Celanese、日本住友化学、日本宝理塑料
主要牌号：Vectra、Sumikasuper、LAPEROS
包装规格：原厂原包，分大包装与小包装两种；小包副牌、箱装副牌、大包料/吨包料分档码放，按批量备货
仓库现货：LCP副牌仓库现货5000吨左右
现货明细：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：先测后签，进厂先把关键指标测一遍，对上用途再签合同
选型口诀与一个渭南案例
选型口诀：
高频天线、高速连接器，介电卡死再下单；
一般连接器、结构件，副牌能省；
熔指、流动长度先打薄壁样；
介电按批测，高频件别混批；
认Vectra、Sumikasuper、LAPEROS三家原厂原粒。
渭南那家做5G天线和高频连接器的厂，吃过熔指对上就上机的亏，几批天线谐振偏了返工。后来把一般连接器件换成塞拉尼斯Vectra的副牌，高频天线件仍用住友Sumikasuper正牌，介电按批留样跟测，超差批次几乎清零，来料成本还降了一截。这就是把数字盯对的价值——LCP副牌能不能用，不看价格，看你盯的那个数对不对。宁波市科隆新材料有限公司调配进口LCP副牌多年，通信件选型的案子处理不少。
同牌号LCP副牌，介电常数浮动常在小数点后第三位、线收缩率偏差在0.1个百分点上下，分子骨架和正牌出自同一套液晶聚合工艺——盯准这个数字，副牌照样能上高频线。
Let's put a number here first: the increasingly tiny antenna in 5G phones and the transmission of high-frequency signals inside the device are increasingly relying on a kind of liquid crystal polymer—this is LCP. The global LCP resin market is highly concentrated, with the top six producers capturing about 70% of the capacity, and three foreign major manufacturers alone accounting for half of the market.
Many people don’t realize that the reason your phone is as thin as it is today is because of LCP. It can be injection-molded into millimeter-thin walls, has high-frequency dielectric stability, can withstand heat reflow soldering, and is relied upon for connectors, antennas, and high-speed connectors. But precisely with this kind of material that 'gets thinner and denser,' if you choose a substandard version, the high-frequency performance will start to drift.
In Weinan, Shaanxi, there's a factory that makes 5G communication antennas and high-frequency connectors. Last year, a batch of LCP second-brand material was used; as long as the melt index matched, it was put into production. The dimensions were fine when molded, but during mass production sampling, it was found that the dielectric constant varied by a few tenths between batches, causing several batches of high-frequency antennas to have shifted resonances, requiring the entire batch to be reworked. The problem is not whether 'LCP can use second-brand material,' but whether you know which parameter to monitor. Today we'll thoroughly explain LCP second-brand material.
What is LCP, and who is supplying it?
LCP, scientifically known as Liquid Crystal Polymer, is an aromatic polyester that can form a liquid crystal state at high temperatures. It flows extremely thinly, is heat-resistant, dimensionally stable, and has good high-frequency dielectric properties. It is a specialized material for 5G antennas, high-speed connectors, and thin-walled electronic components. Its key capability is that 'the thinner, the easier it flows; the finer, the better it molds,' making it essential for the tight, precise spaces inside mobile phones.
Global LCP is highly concentrated, according to market share and production capacity caliber (cross-verified by multiple industry institutions, 2025–2026):
Celanese (USA): Represents the Vectra LCP brand, with a leading market share, covering applications from high-frequency to automotive electronics, and having many grades;
Sumitomo Chemical (Japan): Representative brand Sumikasuper. Its official website claims a global LCP market share of about 27%, ranking second. After a roughly 30% capacity expansion at the Ehime plant in 2023, it established an annual production system of 12,000 tons;
Polyplastics (Japan): Representative grade LAPEROS, with a market share of about 15%, is known for thin-walled precision electronic components. In 2025, they further expanded with high-flow grades such as LH and TF.
Outside of these three, Toray Siveras, Kuraray, and others are also participants. Domestic materials are catching up, but the mainstream high-end market is still dominated by these three foreign major manufacturers.
What is the kicker, and what is the difference in numbers?
The concept of LCP secondary cards is in line with other special materials.
Definition: Within the same manufacturer and the same brand, the portion that does not fully meet the official brand's indicators during factory inspection. For the same batch of polymer, products that meet the standards are labeled with the official brand, while minor deviations in certain indicators are considered sub-brand.
Four main sources: leftover material from starting and stopping production, transitional material from grade switching, batches with slight exceedances in melt index/color/one specific property due to process fluctuations, and leftover material from secondary lines.
It is still the original factory's native aggregated particles, with a molecular structure identical to the genuine brand. The distinction from recycled and reprocessed materials:
| Type | Source | Quality | Typical uses |
|---|
| Genuine brand | Original factory standard batch | All indicators meet the standards, high-frequency performance is stable | High-frequency antenna, high-speed connector |
| Side deck | Factory batch not fully up to standard | Some indicators slightly deviate, the substrate is of the same origin | General connectors, non-high-frequency components |
| Recycled material / Sprue material | Processing scrap material into pellets | Has undergone one heat history | low-specification product |
| Recycled material | Recycled Plastic Pelletizing | Performance fluctuates greatly | low-end filling |
Selenis Vectra: The main force in the high-frequency gear
Selenis Vectra is the most comprehensive grade in LCP, covering high-frequency, automotive electronic components, and connectors, capable of offering dozens of grades, with mature tuning for high-frequency performance. Its subsidiary grade floating items are commonly melt index and flow length, while the main dielectric performance remains relatively stable.
For general connectors and non-highest-frequency structural components, Vectra's sub-brand is sufficient; for 5G high-frequency antennas and high-speed connectors, components whose dielectric performance needs to be accurate to several decimal places must be the main brand or carefully selected sub-brand. Packaging is divided into large and small packages, taken according to batch quantity.
Applicable scenarios: high-frequency connectors, automotive electrical components.
Sumitomo Sumikasuper: A veteran claiming to be second
Sumitomo Chemical Sumikasuper is a veteran player in the LCP industry. Its official website claims a global market share of about 27%, ranking second. The Ehime plant expanded in 2023 to an annual production of 12,000 tons. It has deep involvement in 5G, 6G high-speed communications, and automotive electronics, with both film-grade and progressive mold molding capabilities.
Its sub-brand has common liquidity and hue fluctuations, and the batches are relatively consistent. For making communication structural components or the internal parts of antennas that are not at the highest frequencies, this sub-brand is worth trying. For high-frequency components with particularly strict dielectric requirements, you still need to use the main brand.
Applicable scenarios: communication antenna components, vehicle-mounted electrical equipment.
Polyplastics LAPEROS: Excels in thin-walled precision parts
Polyplastics LAPEROS focuses on thin-walled, precision electronic components. The new LH and TF grades released in 2025 have further improved fluidity and thin-wall molding, and are widely used in mobile phones and precision connectors.
Its secondary brand has common variations in flow length, suitable for general thin-walled parts with less stringent liquidity requirements. For thin and dense mobile phone-grade precision parts, don’t gamble with the secondary brand. Together, the three companies constitute the main foreign original sources available for the LCP category.
Applicable scenarios: thin-walled electronic components, precision connectors.
Pitfall Avoidance: Which Numbers to Focus on for High-Frequency Items
The LCP sub-board is used for 5G communication parts, with three slots.
1. Focus on the dielectric. When making high-frequency antennas and high-speed connectors, the dielectric constant and dielectric loss must be measured to several decimal places for each batch, not just relying on the flow index for machine processing.
2. Fluidity for thin walls. Secondary brands often float the flow length, while thin-walled precision parts should first be prototyped to verify mold filling, rather than relying on experience.
3. Batch consistency. Different batches of the same card may have variations in dielectric properties and flow; continuous high-frequency components should be sampled and tracked by batch.
Packaging is only divided into large packaging and small packaging, don’t be overcharged by 'custom repackaging'.
Cologne Warehouse Spot｜LCP Data
Main promoted brands: Celanese, Sumitomo Chemical (Japan), Polyplastics (Japan)
Main brands: Vectra, Sumikasuper, LAPEROS
Packaging specifications: Original factory packaging, available in large and small packs; small packs are sub-branded, boxed sub-branded, large pack materials/ton bags are graded and stacked, stocked according to batch quantity.
Warehouse stock: LCP secondary brand warehouse stock around 5,000 tons
Spot details: Small package secondary brand stock 800-1000 tons, carton secondary brand stock 300-500 tons, large package material/ton package material stock 3500-3900 tons
Supply Assurance: Test first, sign later. Before entering the factory, measure the key indicators once, and only sign the contract if they meet the intended use.
Selection Mnemonics and a Case from Weinan
Selection Tip:
High-frequency antennas, high-speed connectors, place an order again only after the dielectric is stuck.
For general connectors and structural parts, a secondary brand can save costs;
For melt flow index and flow length, first test on thin-wall samples;
Measure dielectric by batch, do not mix high-frequency parts in the same batch;
Use original pellets from the three manufacturers: Vectra, Sumikasuper, LAPEROS.
The factory in Weinan that makes 5G antennas and high-frequency connectors once suffered losses from putting parts directly on the machine based on melt flow index alone, resulting in several batches of antennas with shifted resonance that had to be reworked. Later, they replaced general connectors with the Vectra alternative from Celanese, while continuing to use genuine Sumikasuper for high-frequency antenna parts. Dielectric was sampled and tested by batch, and the number of out-of-spec batches almost dropped to zero, while incoming material costs even decreased significantly. This shows the value of keeping an eye on the numbers—whether the LCP alternative can be used depends not on the price, but on whether the number you are monitoring is correct. Ningbo Kolon New Materials Co., Ltd. has been blending imported LCP alternatives for many years and has handled numerous cases involving communication component selection.
For alternatives of the same LCP grade, the dielectric constant typically fluctuates in the third decimal place, and linear shrinkage deviation is around 0.1 percentage points. The molecular backbone and genuine brand come from the same liquid crystal polymerization process—if you focus on this number, the alternative can still be used in high-frequency lines.
