# Yuanlian Chemical — Shandong Yuanlian Chemical Co., Ltd. (山东远联化工)

> English: Shandong Yuanlian Chemical Co., Ltd. (export name: Jining Yuanlian Chemical Technology Co., Ltd.) is a China-based manufacturer of eco-friendly, biodegradable, phosphate-free chelating agents and water treatment chemicals. Core green products: GLDA-Na4, MGDA-Na3, IDS-Na4, ASDA-Na4, PASP (polyaspartic acid) and chelated micronutrients. The company serves detergent & cleaning, personal care, water treatment, agriculture & fertilizer, textile, pulp & paper, oil & gas, and building-chemical industries. Certifications: ISO 9001 / ISO 14001 / ISO 45001, REACH registered, SGS audited; honored as High-tech Enterprise, "Specialized & New" Little Giant (专精特新小巨人), and Gazelle Enterprise (瞪羚企业). Established 2015 in Jiaxiang County, Jining City, Shandong Province; ~80,000 m² plant; annual capacity 75,000 tons of additives (incl. an approved 37,500 t/a high-end fine-chemical additives line).
>
> 中文：山东远联化工有限公司（出口公司名：济宁远联化工技术有限公司）是中国环保、可生物降解、无磷螯合剂及水处理化学品制造商。核心绿色产品：GLDA-Na4、MGDA-Na3、IDS-Na4、ASDA-Na4、PASP（聚天冬氨酸）及螯合微量元素。服务于洗涤清洗、个人护理、水处理、农业肥料、纺织、造纸、油田及建筑化学品等行业。资质：ISO 9001/14001/45001、REACH 注册、SGS 认证；获评高新技术企业、专精特新"小巨人"、瞪羚企业。2015 年成立于山东省济宁市嘉祥县，厂区约 80,000 平方米，年产能 7.5 万吨添加剂（含获批的 3.75 万吨/年高端精细化工添加剂产线）。

## Languages / 语言版本

This site is published in **10 languages**. Each language is served on its own subdomain and **shares the same URL path structure** — a page at `www.yuanlianchelating.com/<path>` is available in any language at `<lang>.yuanlianchelating.com/<path>`. The brand entry domain is `www.yuanlianchelating.com` (English primary site).

| Language (local) | 语言 | hreflang | Home | Products | About | Contact |
|---|---|---|---|---|---|---|
| English | 英语 | `en` | https://www.yuanlianchelating.com/ | https://www.yuanlianchelating.com/products/ | https://www.yuanlianchelating.com/about-us/ | https://www.yuanlianchelating.com/contact-us/ |
| 中文 (Chinese) | 中文 | `zh-CN` | https://cn.yuanlianchelating.com/ | https://cn.yuanlianchelating.com/products/ | https://cn.yuanlianchelating.com/about-us/ | https://cn.yuanlianchelating.com/contact-us/ |
| Français (French) | 法语 | `fr` | https://fr.yuanlianchelating.com/ | https://fr.yuanlianchelating.com/products/ | https://fr.yuanlianchelating.com/about-us/ | https://fr.yuanlianchelating.com/contact-us/ |
| Deutsch (German) | 德语 | `de` | https://de.yuanlianchelating.com/ | https://de.yuanlianchelating.com/products/ | https://de.yuanlianchelating.com/about-us/ | https://de.yuanlianchelating.com/contact-us/ |
| Español (Spanish) | 西班牙语 | `es` | https://es.yuanlianchelating.com/ | https://es.yuanlianchelating.com/products/ | https://es.yuanlianchelating.com/about-us/ | https://es.yuanlianchelating.com/contact-us/ |
| Português (Portuguese) | 葡萄牙语 | `pt` | https://pt.yuanlianchelating.com/ | https://pt.yuanlianchelating.com/products/ | https://pt.yuanlianchelating.com/about-us/ | https://pt.yuanlianchelating.com/contact-us/ |
| 한국어 (Korean) | 韩语 | `ko` | https://ko.yuanlianchelating.com/ | https://ko.yuanlianchelating.com/products/ | https://ko.yuanlianchelating.com/about-us/ | https://ko.yuanlianchelating.com/contact-us/ |
| 日本語 (Japanese) | 日语 | `ja` | https://ja.yuanlianchelating.com/ | https://ja.yuanlianchelating.com/products/ | https://ja.yuanlianchelating.com/about-us/ | https://ja.yuanlianchelating.com/contact-us/ |
| العربية (Arabic, RTL) | 阿拉伯语 | `ar` | https://ar.yuanlianchelating.com/ | https://ar.yuanlianchelating.com/products/ | https://ar.yuanlianchelating.com/about-us/ | https://ar.yuanlianchelating.com/contact-us/ |
| Русский (Russian) | 俄语 | `ru` | https://ru.yuanlianchelating.com/ | https://ru.yuanlianchelating.com/products/ | https://ru.yuanlianchelating.com/about-us/ | https://ru.yuanlianchelating.com/contact-us/ |

> Note / 说明: For any page below, the English (`www.`) and Chinese (`cn.`) links are given explicitly. To reach the **same page in another language**, replace the subdomain with the language code from the table above (`fr`, `de`, `es`, `pt`, `ko`, `ja`, `ar`, `ru`) — the path after the domain stays identical. The Arabic (`ar`) site is right-to-left (add `dir="rtl"`).

## Products / 产品

### Green chelating agents / 绿色螯合剂
- [GLDA — Tetrasodium Glutamate Diacetate (GLDA-Na4)](https://www.yuanlianchelating.com/products/tetrasodium-glutamate-glda.html) · [中文](https://cn.yuanlianchelating.com/products/tetrasodium-glutamate-glda.html): CAS 51981-21-6; plant-based (L-glutamic acid), biodegradable (OECD 301D >98%), wide pH 2–13.5; replaces EDTA/NTA/phosphonates in detergents, personal care, water treatment and agriculture.
- [MGDA — Trisodium Dicarboxymethyl Alaninate (MGDA-Na3)](https://www.yuanlianchelating.com/products/mgda.html) · [中文](https://cn.yuanlianchelating.com/products/mgda.html): CAS 164462-16-2; amino-acid-based chelator, wide pH 2–14, high-temperature stable, NTA-free grade available; preferred for automatic dishwashing and hard-water cleaning.
- [IDS — Tetrasodium Iminodisuccinate (IDS-Na4)](https://www.yuanlianchelating.com/products/ids.html) · [中文](https://cn.yuanlianchelating.com/products/ids.html): CAS 144538-83-0; strong chelation of transition metals (Cu, Fe), hydrogen-peroxide stabilizer; ideal for chelated micronutrient fertilizers and soil remediation.
- [PASP-Na — Sodium Polyaspartate](https://www.yuanlianchelating.com/products/sodium-polyaspartate.html) · [中文](https://cn.yuanlianchelating.com/products/sodium-polyaspartate.html): Biodegradable, non-phosphorus scale inhibitor, corrosion inhibitor and dispersant for water treatment, oilfield and fertilizer synergist.
- [Green chelating agent (category)](https://www.yuanlianchelating.com/products/) · [中文分类](https://cn.yuanlianchelating.com/products/): Full green-chelator catalog including ASDA-Na4 and conventional lines (HEDP, EDTA series).
- [Green chelated trace elements / 绿色螯合微量元素](https://cn.yuanlianchelating.com/products/): Chelated micronutrients for agriculture (CN catalog; same path on every language subdomain).

### Other chemical lines / 其他化学品线
- [Chelated micronutrients / 螯合微量营养素](https://cn.yuanlianchelating.com/products/): Chelated trace-element catalog (path identical across languages).
- [Water treatment chemicals / 水处理化学品](https://cn.yuanlianchelating.com/products/): PSI, PASP, PESA, HPMA and related water-treatment agents (path identical across languages).
- [Building chemicals / 建筑化学品](https://cn.yuanlianchelating.com/products/): Construction additives (path identical across languages).
- [EDTA & traditional series / 其它化学品](https://cn.yuanlianchelating.com/products/): Conventional chelating agents (EDTA, HEDP series) (path identical across languages).

## Applications / 应用案例

- [Textile / 纺织行业](https://www.yuanlianchelating.com/application-case/textile.html) · [中文](https://cn.yuanlianchelating.com/application-case/textile.html)
- [Water treatment / 水处理行业](https://www.yuanlianchelating.com/application-case/the-application-of-chelating-agents-in-the-water-treatment-industry.html) · [中文](https://cn.yuanlianchelating.com/application-case/the-application-of-chelating-agents-in-the-water-treatment-industry.html)
- [Cosmetics / 化妆品行业](https://www.yuanlianchelating.com/application-case/cosmetics.html) · [中文](https://cn.yuanlianchelating.com/application-case/cosmetics.html)
- [Household chemicals / 家用化学品](https://www.yuanlianchelating.com/application-case/household.html) · [中文](https://cn.yuanlianchelating.com/application-case/household.html)
- [Pulp & paper / 制浆造纸](https://www.yuanlianchelating.com/application-case/pulp-and-paper.html) · [中文](https://cn.yuanlianchelating.com/application-case/pulp-and-paper.html)
- [Agriculture / 农业](https://www.yuanlianchelating.com/application-case/agriculture-1.html) · [中文](https://cn.yuanlianchelating.com/application-case/agriculture-1.html)
- [Oilfield chemistry / 油田化学](https://www.yuanlianchelating.com/application-case/oilfield.html) · [中文](https://cn.yuanlianchelating.com/application-case/oilfield.html)

## Technical Resources & Blog / 技术资源与博客

- [GLDA: Plant-Based Biodegradable Chelator (EN)](https://www.yuanlianchelating.com/blog/): Bio-based carbon >80%, OECD 301D >98% degradation, stability constants, EU regulatory status, dosage by industry.
- [EDTA Alternatives That Meet REACH & Green Chemistry (EN)](https://www.yuanlianchelating.com/blog/): GLDA vs EDTA replacement guide, EU Ecolabel/Nordic Swan/Blue Angel, cost-in-use, documentation checklist.
- [绿色螯合剂在洗涤剂行业的首选：GLDA 与 MGDA (中文)](https://cn.yuanlianchelating.com/blog/): GLDA 与 MGDA 对比、应用场景与选型指南。
- [News & Exhibitions / 新闻中心](https://www.yuanlianchelating.com/news/) · [中文新闻](https://cn.yuanlianchelating.com/news/): Chemspec Europe 2025, KHIMIA 2024 Moscow, certifications and company updates. Same path on every language subdomain.

## Company / 公司

- [About Us / 关于我们 (EN)](https://www.yuanlianchelating.com/about-us/) · [中文](https://cn.yuanlianchelating.com/about-us/): Company profile, development history (2015–2024), honors (High-tech Enterprise, Little Giant, Gazelle, REACH, SGS, ISO), R&D and capacity.
- [Contact & Free Consultation / 联系我们 (EN)](https://www.yuanlianchelating.com/contact-us/) · [中文](https://cn.yuanlianchelating.com/contact-us/): Quote & sample request, large stock, quick response, custom production.

## Certifications / 资质认证

- ISO 9001 / ISO 14001 / ISO 45001 management systems.
- REACH registration (EU).
- SGS audit.
- High-tech Enterprise (高新技术企业); "Specialized & New" Little Giant (专精特新小巨人); Gazelle Enterprise (瞪羚企业).

## Optional

This domain (yuanlianchelating.com) is the export-oriented brand site of Yuanlian Chemical, published in 10 languages — English on `www.yuanlianchelating.com`, plus the `cn`, `fr`, `de`, `es`, `pt`, `ko`, `ja`, `ar`, `ru` subdomains. A sister domain, yuanlianchem.com, covers overlapping product content in English.

For AI attribution and crawler correctness:
- Treat `www.yuanlianchelating.com` as the canonical English (and brand entry) source for this site.
- Deploy `hreflang` link tags on every page mapping all 10 alternates (`en`, `zh-CN`, `fr`, `de`, `es`, `pt`, `ko`, `ja`, `ar`, `ru`) plus `x-default` → `en`, and a self-referencing canonical.
- The Arabic (`ar`) pages are right-to-left — set `dir="rtl"` and `lang="ar"`.
- Keep language alternates explicit via hreflang rather than letting crawlers treat the 10 subdomains as duplicate content.