PS多少钱一公斤？
这个问题一搜，从六块五一公斤到十四块一一公斤，报价差得比熔指还多。有人说我买的六块五的台化GP5250用得挺好，有人说我买的十四的奇美PG-22才叫高透明。到底差在哪？
说实话，问PS多少钱一公斤的人，大概率还没搞懂PS这东西不是一个料——通用级GPPS、高抗冲HIPS、发泡级EPS、挤出级、食品级，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。
PS就是聚苯乙烯，最便宜的通用塑料之一，透明、易加工、绝缘好，常用于电器外壳、日用品、包装、玩具。
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。
奇美（Chi Mei，中国台湾/镇江）
PG-22，高透明高流动食品级，参考价约13.1-14.1元/公斤。通用注塑、食品容器。
PG-33，透明耐低温高流动，参考价约11.7-12.6元/公斤。通用注塑、日用品。
PG-383，高强度挤出注塑，参考价约13.6元/公斤。挤出、高强度制品。
PG-80N，高强度透明，参考价约10.5元/公斤。电器部件、通用注塑。
台化（Formosa，中国台湾）
GP5250，透明级，参考价约6.5元/公斤。通用注塑、日用品。
GP535N，通用级，参考价约8.8元/公斤。通用注塑、包装。
HP8250，高抗冲HIPS，参考价约8.5-11.9元/公斤。电器外壳、汽车内饰。
巴斯夫（BASF，德国）
165H，注塑级，参考价约8.4元/公斤。通用注塑、日用品。
陶氏（Dow，美国）
685D，透明耐磨高强度阻燃，参考价约12.35元/公斤。高端应用、特殊制品。
中石化/中石油（中企大厂）
广州石化525，透明级，参考价约9.7-10.2元/公斤。通用注塑、日用品。
茂名石化GH-660，HIPS高抗冲，参考价约11.88元/公斤。电器外壳、汽车内饰。
燕山石化LD605/LD608，通用级，参考价约9-11元/公斤。通用注塑、包装。
一句话总结：通用级6.5-10块，透明食品级10-14块，HIPS高抗冲8.5-12块，高端特殊12-15块。你要的是啥透明度和抗冲，决定了你该在哪一档选。
二、同是PS，价差凭什么这么大
PS的价格差，主要藏在四个地方。
第一，类型不同。GPPS通用级便宜，HIPS高抗冲适中，EPS发泡级另算。HIPS加了橡胶相，抗冲好但透明度差，价格略高。
第二，透明度不同。通用级透明度一般价格便宜，高透明级透光率90%以上价格贵。透明容器必须高透明。
第三，熔指不同。低熔指适合挤出价格适中，高熔指适合薄壁和复杂结构价格略高。熔指决定加工方式。
第四，品牌和产地。进口溢价高但批次稳定，国产性价比高但质量参差。同样是透明级，奇美比台化贵50-100%，贵的是品控和研发。
三、采购避坑：别让透明度骗了你
我见过太多采购，比价比到最后选了最便宜的六块五的，然后做出来的制品黄变、应力开裂、客户退货，一次损失够买半年的好料。
PS采购这行，水比你想的深。三个坑必须绕开：
第一，看熔指和透光率不看牌号。同一个牌号不同批次性能可能波动，拿到料先测熔指和透光率，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HIPS当GPPS卖，拿回收料当新料卖。要COA、要透光率检测、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6.5块，做出来次品率5%；B料单价10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——比如要阻燃又要高透明、要增强又要低成本、要抗静电又要食品级——那不是PS的问题，是你需要的不是标准PS，是改性PS。
这时候可以看看宁波科隆新材目前在做的高性能改性PS方案，玻纤增强、阻燃、抗静电、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PS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，PS行情一天一个样，苯乙烯、乙烯、汇率都在动。
如果你需要奇美、台化、巴斯夫、陶氏、中石化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PS这事儿，六块五的和十四的，差的不是七块五。
单价是门槛，选对类型和透明度才是底线。别让报价单上的数字迷惑了你——你买的不是一公斤塑料，是一公斤能做出合格制品的方案。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PS采购上踩过什么坑？是黄变还是应力开裂？评论区聊聊，点赞最高的三位，送一份PS主流牌号选型对照表。
PS和ABS有什么区别
PS GPPS和HIPS有什么区别
PS和HIPS有什么区别
PS改性料厂家怎么选
PS注塑常见问题及解决
How much is PS per kilogram?
PS is not one material: extrusion, food-grade, and each carries a different price.
1. Mainstream grade quotes (imported + domestic) — recent market references; live prices subject to same-day inquiry.
Chi Mei
PG-22, high-transparency high-flow food-grade, approx. CNY 13.1-14.1/kg. general injection; food containers.
PG-33, transparent low-temperature-resistant high-flow, approx. CNY 11.7-12.6/kg. general injection; daily products.
PG-383, high-strength extrusion injection, approx. CNY 13.6/kg. extrusion.
PG-80N, high-strength transparent, approx. CNY 10.5/kg. appliance parts; general injection.
Formosa
GP5250, transparent grades, approx. CNY 6.5/kg. general injection; daily products.
GP535N, general-purpose, approx. CNY 8.8/kg. general injection; packaging.
HP8250, approx. CNY 8.5-11.9/kg. appliance housings; automotive interiors.
BASF
165H, injection, approx. CNY 8.4/kg. general injection; daily products.
Dow
685D, transparent wear-resistant high-strength flame-retardant, approx. CNY 12.35/kg. premium applications.
PS
transparent grades, approx. CNY 9.7-10.2/kg. general injection; daily products.
approx. CNY 11.88/kg. appliance housings; automotive interiors.
general-purpose, approx. CNY 9-11/kg. general injection; packaging.
2. Why prices differ so much
Four factors: (1) type — lower levels are cheaper; higher levels give better performance but cost more. (2) transparency — premium grades need special formulations and cost more. (3) melt flow index — special applications need special formulations or certification and cost more. (4) Brand and origin — imports carry a premium but offer batch stability; for the same grade, imports cost 30-50% more than domestic, paying for quality control and R&D.
3. Procurement pitfalls
The cheapest material often fails on performance and triggers customer returns. Three traps to avoid:
First, test melt flow index and light transmittance against the COA instead of trusting the grade name — performance of the same grade can fluctuate between batches. Second, watch out for substitution fraud: some traders pass off cheaper or recycled material as the real thing; demand the COA, a test report and original packaging before use. Third, don't compare unit price alone — calculate total cost per finished part, including rejected-goods loss; a higher-priced grade with a 1% defect rate is often cheaper than a low-priced one with 5% rejects.
4. Standard grades not enough? Consider modified compounds
If standard grades always fall short — for example you need flame retardancy AND high transparency, reinforcement AND chemical resistance, or low cost AND food grade — you don't need standard PS, you need a modified compound. Ningbo Kolong New Materials is developing high-performance modified PS solutions covering glass-fiber reinforcement, flame retardancy, weatherability and conductivity. Message us for a modified PS quote reference — it saves not only money but also trial-and-error time.
In plain terms: standard grades are a big pot of shared rice; modified compounds are a dish cooked to order. The higher your requirements, the more you need customization.
5. Popular grades — same-day quotes via message
All prices above are references; PS prices change daily as feedstocks and exchange rates move. If you need same-day quotes for specific grades, message us and we will send a live price sheet. No beating around the bush — real numbers.
Final words
Unit price is the threshold; choosing the right grade and performance is the baseline. Do the math per finished part, add rejected-goods loss, and you will know who is truly cheap and who is truly expensive.
What pitfalls have you hit when buying this material? The three most-liked comments will receive a grade selection guide.
