About Us


Wintersun's main office at 1250 East Belmont St, Ontario, California 91761

Wintersun’s main office at 1250 East Belmont St, Ontario, California 91761


About Us

Wintersun Chemical has been a premier chemical supplier in the United States since 1997.  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

In addition to www.wintersunchem.com, we also have  www.wintersunchemical.com, e-Commerce website designed to serve you who want to purchase our products online.


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 quality 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

Wintersun offer a diverse selection of the chemicals used in the development and manufacturing on the following 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

      NACD Certificate of Conformance


Awards, Licences, and Certificates

     Awards, Licences, and Certificates

DBE Certificate  |  CHP Certificate


NACD Verified Logo