Dongying Yuanli Chemical (Company former name) was established, mainly producing C5, C6, light oil and other chemicals.

On March 17, 2006, Dongying Haixing Chemical Co., Ltd was established based on Dongying Yuanli Chemical, building a plant in Longju Economic Park, Dongying District, Dongying City to produce n-pentane and isopentane, etc. for diversified operation.

The company’s product melamine was successfully exported to markets such as Malaysia and India.

The company's products, n-pentane and isopentane, entered the markets in Malaysia, Australia, New Zealand and South Africa, becoming the largest pentane exporter in northern China.

According to the statistics of the Indian Laminate Industry Association in 2010, the company's melamine was in the top three in the Indian market.

Easthony Chemical Group was established based on Haixing Chemical, including Qingdao Easthony Inc, Qingdao Eastchem Inc. and Dongying Haixing Chemical Co., Ltd, DONGYING EASTCHEM CO., LTD these two production bases.

Set up an office in Ipoh, Malaysia to serve Southeast Asian customers via localized operation.

On June 5, 2018, DONGYING EASTCHEM CO., LTD obtained Dangerous Cargo License and concentrated its dangerous goods business on EASTCHEM platform to respond to the Chinese government’s regulatory requirements.

Set up an office in Seattle, USA. The company’s products were exported to more than 60 countries and regions, including SINOCHEM, SIL and other Fortune 500 customers; successfully reached a supply agreement with Apple Japan in January, 2019.