Based on your request for chemical reagents manufacturers and suppliers, here are some reputable chemical reagents manufacturers and platforms that can meet your needs:

1. Maoming Xiongdah Chemical Co., Ltd.
- Location: Guangdong Province, China
- Established: 2019
- Specialization: International supply, wholesale, and export of high-purity chemical reagents.
- Product Range: Over 2,217,233 types of chemical reagents.
- Quality Control: Strict quality control and excellent customer service.
- Website: [Xiongdah Chemical](https://xiongdachemical.com/) 

2. AquaPhoenix Scientific
- Location: Hanover, Pennsylvania, USA
- Specialization: Customized chemical and reagent manufacturing.
- Product Range: Buffers, chemical indicators, reagents, standards, and titrants.
- Quality Assurance: ISO 9001:2015 certification, ACS Grade materials, NIST-traceable products.
- Additional Services: Private labeling, induction seals, and fast shipping.
- Website: [AquaPhoenix Scientific](https://www.aquaphoenixsci.com/services/manufacturing/chemical-reagent/) 

3. Made-in-China.com
- Platform: B2B marketplace for Chinese manufacturers and suppliers.
- Product Range: Over 2,000+ manufacturers and suppliers with 6,000+ products.
- Types of Reagents: Organic intermediates, inorganic chemicals, chemical reagents, catalysts, and more.
- Quality Certifications: ISO 9001, GMP, and other certifications.
- Website: [Made-in-China.com](https://www.made-in-china.com/manufacturers/chemical-reagent.html) 

Key Features of These Suppliers
- Quality Control: All listed suppliers emphasize high-quality products with strict quality control measures.
- Customization: Many suppliers offer OEM and ODM services, allowing you to customize products to meet specific requirements.
- Certifications: Look for suppliers with ISO 9001, GMP, and other relevant certifications to ensure reliability and compliance.
- Customer Service: Reputable suppliers provide excellent customer service, including quick response times and flexible order options.

How to Compare and Choose
1. Product Range: Ensure the supplier offers the specific chemical reagents you need.
2. Quality Certifications: Prioritize suppliers with recognized certifications to guarantee product quality.
3. Customization Options: Check if the supplier can customize products to meet your specific requirements.
4. Customer Reviews: Look for feedback and reviews from other customers to assess reliability and service quality.
5. Pricing and MOQs: Compare prices and minimum order quantities (MOQs) to find the best value for your budget.

By leveraging these resources, you can find reliable chemical reagents manufacturers and suppliers to meet your needs.