K树脂多少钱一公斤？
这个问题一搜，从十一块一公斤到二十八块一公斤，报价差得比苯乙烯含量还多。有人说我买的十一的国产通用用得挺好，有人说我买的二十八的进口高透明才叫高端。到底差在哪？
说实话，问K树脂多少钱一公斤的人，大概率还没搞懂K树脂这东西不是一个料——通用级、高透明级、高抗冲级、食品级、医用级，每个分支价格都不一样。你拿通用级的价和高透明比，那不叫比价，叫被忽悠。
K树脂就是丁苯透明抗冲树脂，由苯乙烯和丁二烯嵌段共聚制得，高透明、高抗冲、易加工，常用于包装、玩具、医疗器械、家电外壳、办公用品。
一、主流牌号报价（外企+中企）
先把市面上走量的牌号和参考价摆出来。以下为近期市场参考价，实时价格以当日询价为准。
进口K树脂（外企大厂）
通用级，参考价约15-22元/公斤。包装、玩具、办公用品。
高透明级，参考价约18-25元/公斤。高端包装、医疗器械、展示用品。
高抗冲级，参考价约20-28元/公斤。家电外壳、结构件、电动工具。
国产K树脂（中企大厂）
通用级，参考价约11-17元/公斤。性价比高，包装、玩具、办公用品。
高透明级，参考价约13-20元/公斤。高端包装、医疗器械、展示用品。
高抗冲级，参考价约15-23元/公斤。家电外壳、结构件、电动工具。
一句话总结：国产通用11-17块，国产高透明/高抗冲13-23块，进口通用15-22块，进口高透明/高抗冲18-28块。你要的是啥苯乙烯含量和性能，决定了你该在哪一档选。
二、同是K树脂，价差凭什么这么大
K树脂的价格差，主要藏在四个地方。
第一，苯乙烯含量不同。苯乙烯含量70%左右便宜，含量85%以上高透明但贵。苯乙烯含量越高，透明度和刚性越好，但抗冲性略降。
第二，透明等级不同。通用级便宜，高透明级贵。高透明需要特殊工艺，价格更高。
第三，抗冲等级不同。通用级便宜，高抗冲级贵。高抗冲需要特殊丁二烯含量，价格更高。
第四，品牌和产地。进口溢价高但批次稳定，国产性价比高但牌号少。同样是高透明级，进口比国产贵30-50%，贵的是品控和研发。
三、采购避坑：别让苯乙烯含量骗了你
我见过太多采购，比价比到最后选了最便宜的十一的，然后做出来的制品透明差、有雾度、客户退货，一次损失够买半年的好料。
K树脂采购这行，水比你想的深。三个坑必须绕开：
第一，看透光率和冲击强度不看牌号。同一个牌号不同批次性能可能波动，拿到料先测透光率和冲击强度，和COA对得上再用。别听销售说"差不多"，差不多就是差很多。
第二，警惕以次充好。有些贸易商拿GPPS当K树脂卖，拿低苯乙烯当高苯乙烯卖。要COA、要苯乙烯含量检测、要原厂包装，三证合一才敢用。
第三，别只比单价，算综合成本。A料单价11块，做出来制品次品率5%；B料单价17块，次品率1%。算到每件制品上，B料反而更便宜。
四、标准牌号满足不了？看看改性方案
如果你发现标准牌号怎么选都差点意思——比如要高透明又要高抗冲、要食品级又要高流动、要低成本又要医用级——那不是K树脂的问题，是你需要的不是标准K树脂，是改性K树脂。
这时候可以看看宁波科隆新材目前在做的高性能改性K树脂方案，玻纤增强、阻燃、耐候、导电这些方向都有对应牌号在做。有特殊需求的可以私信要一份改性K树脂的报价参考，比自己买基料再加助剂调试，省的不只是钱，还有试错的时间。
说白了，标准料是大锅饭，改性料是定制菜。你的制品要求越高，越需要定制。
五、常用牌号，私信给你当日报价
上面的价格都是参考价，K树脂行情一天一个样，苯乙烯、丁二烯、催化剂、汇率都在动。
如果你需要进口、国产这些品牌的具体牌号当日报价，私信我，发你一份实时价格表。不绕弯子，报实数。
写在最后
买K树脂这事儿，十一的和二十八的，差的不是十七。
单价是门槛，选对苯乙烯含量和性能才是底线。别让报价单上的数字迷惑了你——你买的不是一公斤塑料，是一公斤能做出高透明包装的方案。把账算到每件制品上，再加上次品退货损失，你才知道谁真便宜谁真贵。
你在K树脂采购上踩过什么坑？是透明差还是有雾度？评论区聊聊，点赞最高的三位，送一份K树脂主流牌号选型对照表。
K树脂和GPPS有什么区别
K树脂苯乙烯含量怎么选
K树脂和ABS有什么区别
K树脂改性料厂家怎么选
K树脂注塑常见问题及解决
How much is K resin per kilogram?
Quotes range from CNY 11/kg to CNY 28/kg. K resin (styrene-butadiene transparent impact resin) is not one material: general, high-transparency, high-impact, food-grade and medical grades each carry a different price.
Made by block copolymerization of styrene and butadiene, K resin offers high transparency, high impact resistance and easy processing, and is used in packaging, toys, medical devices, appliance housings and office supplies.
1. Mainstream grade quotes (imported + domestic) — recent market references; live prices subject to same-day inquiry.
Imported K resin (overseas majors)
General-purpose, approx. CNY 15-22/kg. Packaging, toys, office supplies.
High-transparency, approx. CNY 18-25/kg. Premium packaging, medical devices, display products.
High-impact, approx. CNY 20-28/kg. Appliance housings, structural parts, power tools.
Domestic K resin (Chinese majors)
General-purpose, approx. CNY 11-17/kg. Cost-effective; packaging, toys, office supplies.
High-transparency, approx. CNY 13-20/kg. Premium packaging, medical devices, display products.
High-impact, approx. CNY 15-23/kg. Appliance housings, structural parts, power tools.
In short: domestic general CNY 11-17, domestic high-transparency/high-impact CNY 13-23, imported general CNY 15-22, imported high-transparency/high-impact CNY 18-28.
2. Why prices differ so much
Four factors: (1) Styrene content — around 70% is cheap; above 85% gives better transparency and rigidity but slightly lower impact, and costs more. (2) Transparency grade — high transparency needs special processing. (3) Impact grade — high impact needs special butadiene content. (4) Brand and origin — imports cost 30-50% more for the same grade, paying for quality control and R&D.
3. Procurement pitfalls
The cheapest material often gives poor transparency or haze, causing returns. Three traps to avoid:
First, test light transmittance and impact strength against the COA instead of trusting the grade name. Second, watch for substitution: some traders sell GPPS as K resin or low-styrene as high-styrene; demand the COA, a styrene-content test and original packaging. Third, calculate total cost: A at CNY 11/kg with a 5% defect rate vs. B at CNY 17/kg with 1% — B is cheaper per part.
4. Standard grades not enough? Consider modified compounds
If you need high transparency AND high impact, food grade AND high flow — you need modified K resin. Ningbo Kolong New Materials is developing high-performance modified K resin grades covering GF reinforcement, flame retardancy, weatherability and conductivity. Message us for a modified K resin quote reference.
In plain terms: standard grades are a big pot of shared rice; modified compounds are a dish cooked to order.
5. Same-day quotes via message
K resin prices change daily — styrene, butadiene, catalysts and exchange rates all move. Message us for same-day quotes on specific grades; real numbers.
Final words
The gap between CNY 11 and CNY 28 is not CNY 17. Unit price is the threshold; choosing the right styrene content and performance is the baseline. You are buying a solution for making high-transparency packaging. Do the math per part, add rejected-goods loss, and you will know who is truly cheap.
What pitfalls have you hit buying K resin — poor transparency or haze? The three most-liked comments will receive a K resin grade selection guide.
