Zhejiang Longyou Sihai Chemical Industry Co., Ltd. is a leading hi-tech private stock enterprise in China engaged in the research, development, production and application of highly efficient and environment-friendly phosphor-grouping/boron-grouping non-halogen flame retardants, including non-halogen phosphor-grouping/boron-grouping additive-type flame retardants, non-halogen phosphor-grouping mixed flame retardants, non-halogen single-ingredient organic phosphine flame retardants, inorganic super-fine modified flame retardants and related fine chemicals. Our products are the promotional products of China in the period of "Twelfth-Five-Year-Program", and have obtained ISO9001:2002 quality system certificate.

Our company was founded in 2009, with the land area of 8,000sqm. Built on the basis of the idea and goal of Sihai, our factory has beautiful surrounding and good working environment for all the staff members. Located in Chengnan Industrial Park of Longyou County in Zhejiang Province, Sihai enjoys good location and convenient transportation. We are close to the Logistic Center of Longyou County, Zhegan Railway, Province Highway NO.46 and NO.50, State Highway NO.320, Hangjinqu Expressway, Hangxinlong Expressway and Longliwen Expressway. With the globally environmental idea, we are working hard for building a beautiful home! Sihai takes "environmental protection, fire safety, flame retardancy and high efficiency" as our mission. Upholding the business idea of "Quality first, service supreme, cooperation for win-win, keep improvement" and sticking to the spirit of "Be practical and true, enterprising and self-innovative; working together for mutual benefits", we are working hard to create the dominating strategy of "S.H" brand and striving to be a leading enterprise in this industry!

There is an experienced and creative hi-tech R&D team working in our company, and we establish closely cooperative relationships with famous universities, research institutes and companies of China. Moreover, we are also equipped with all kinds of leading apparatuses. We have large and well-equipped plants, and have small-test labs, application labs and surface modification labs. All these labs are equipped with advanced facilities such as laser particle analyzers, differential thermal analyzers, infrared moisture meters, smoke density instruments, Universal plastic testing machines, whiteness meters, Viscosity meters, SEM (scanning electron microscopes), Volume resistance meters, etc. Therefore, we have good ability to ensure excellent quality, and are able to provide customers with the most satisfactory services and demands.

We also have a skilled and professional sales team, with excellent service passion. With their support and hard work, we have won a good brand reputation and corporate image among our customers all over the world. Now, our products sell well in more than ten countries and regions in Europe, North America and Southeast Asia, as well as dozens of developed provinces and cities of China (including HK, Macao and Taiwan area). We establish close and mutually trusted business relationships with companies and traders in these countries and regions. Relying on excellent quality, a high reputation and good services, Sihai aims to be a brand company through achieving win-win situation with our business partners and customers. All the staff members of Sihai look forward to cooperating with friends around the world for mutual benefit and development. We sincerely hope that Sihai will be your first choice, and we will have good, friendly and harmonious cooperation!