About Us

Our Company 

Wintersun Chemical has been a premier chemical supplier in the United States since 2001. The main office is located in Ontario Southern California with 70,000 square ft office and warehouse space.  Wintersun is listed in California Unified Certification Program (CUCP) database of certified DBEs under chemical distributor category. 

Our Websites 

Our e-Commerce website www.wintersunchemical.com is designed to serve you who want to purchase our products online. Also, please visit our company's website at www.wintersunchem.com to know more products supplied by our company.

For large quantity or any other concern, please feel free to call, email, or fax our customer service. 
Phone: (800) 930-1688  
Email: sales@wintersunchem.com
Fax: (909) 218-8621


At Wintersun, we are committed to excellence.  From manufacturing to packaging and delivery, we provide quality, reliability and the highest degree of customer service.  Our scope of service is structured around the unique needs of each client. Our mission is to provide consistent and reliable sources of chemicals along with exceptional customer service.


Besides our own manufacturing facility, we have established enduring partnerships with many worldwide suppliers and we grow together with them.  At Wintersun, we believe in success through strong relationships with our clients and high quality manufacturers. 

Safety Certificate & Awards

Wintersun Chemical is a proud member of National Association of Chemical Distributors (NACD) which is an international association whose members have the highest standards in environmental safety, performance, and security. Wintersun Chemical also  passed third party verification; a third party validation verifies the standard of each member, so the customers are assured that anality exceeds industry standards. In addition, Wintersun received a CHP reward indicating outstanding achievement in compliance with the laws of the warehouse and the road.

Our Industries

On our website, www.wintersunchem.com,  you will get diverse selection of chemicals used in the development and manufacturing industries.

Why Wintersun?

  • DEA Certified
  • NACD Verified
  • Sources globally
  • Fast and excellent performance in Customer Service, On Time Delivery, Quality and Order fill-rate
  • Capable of FTL/LTL, Mixed load, Hazardous/Non-hazardous shipment
  • Broad based product Line(Liquid/Dry; Organic/Inorganic; Commodity/Specialty)
  • Stock Locally and Ship immediately
  • Repack or OEM per your requirement
  • Technical Data Sheet and Packing information are available in our website
  • Experienced Staff in United States and overseas

Wintersun Holiday Calendar

  • New Year’s Day                  January 1
  • Memorial Day                    Last Monday in May
  • Independence Day             July 4
  • Labor Day                         First Monday in September
  • Thanksgiving Day              4th Thursday in November
  • Christmas Day                   December 25

* When a holiday falls on a Saturday, it is usually observed on the preceding Friday. When the holiday falls on a Sunday, it is usually observed on the following Monday.

Organizations And Affiliations
NACD Certificate of Conformance 2018
NACD Certificate of Conformance 2018


 DBE Certificate  |  CHP Certificate