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No date: Daqing Lianyi Petrochemical Co., Ltd. - Company Profile.
The company will invest 11 billion yuan from 2017 to 2019 to build 17 sets of refining and chemical production units with 3 million tons of raw material pretreatment and 1 million tons/year super suspended bed heavy oil hydrogenation as the core. It is expected to be completed and put into production in 2019. After completion, it can provide more than 3.5 million tons of petrochemical products to the market every year, achieve an annual output value of 19.298 billion yuan, and profit and tax of 2.762 billion yuan, becoming a joint-stock private enterprise in the province. (Source)

No date: Heilongjiang Longyou Petrochemical Co., Ltd. 5.5 million tons / year heavy oil catalytic thermal cracking project and 950,000 tons / year polyolefin project procurement of anticorrosive and fireproof coating framework.
Daqing Lianyi Petrochemical Co., Ltd. is committed to developing into the top domestic and global leading petrochemical industry brand. On May 24, 2018, its wholly-owned subsidiary Heilongjiang Longyou Petrochemical Co., Ltd. started construction of 5.5 million tons of heavy oil per year. Catalytic cracking project and 950,000 tons / year polyolefin project. The total investment of the project is about 11.6 billion yuan, with a total area of 1.886 million square meters. After completion, it will provide 3.5 million tons of petrochemical products to the market, including polyethylene, polypropylene, toluene, mixed xylene, C₉⁺ heavy naphtha, Sulfur can provide raw material resources for the development of chemical industry, light industry, automobile, agriculture, forestry and animal husbandry, machinery manufacturing, and transportation. (Source)

19^th Oct 2020: Trial run at China's Longyou new cracker and PP plants.
According to market sources, Haiguo Longyou Petrochemical Co Ltd (Previous Name: Daqing Lianyi Petrochemical) has conducted trial production on its new cracker since 17 October 2020. However, market sources informed that the commercial startup is slated by end of October- beginning of November 2020. Based in Heilongjiang, China, the company has a 5.5 million tons/year heavy oil catalytic cracker, meanwhile both of its PP new plants with total production capacity of 550,000 tons/year has conducted trial run on end of September using outsource propylene cargoes as well. On the other hand, its 400,000 tons/year HDPE/LLDPE swing plant is pending for further progress. (Source)

29^th Oct 2020: Officially in full production! Haiguolong Oil delivered a high-scoring answer sheet on "oil-to-chemical".
Northeast.com, October 29th: The highly anticipated 5.5 million tons/year heavy oil catalytic cracking project and 950,000 tons/year polyolefin project (hereinafter referred to as the "Longyou 550 Project") started by Heilongjiang Longyou Petrochemical Co., Ltd. are entering the countdown to full production../..
Relying on advanced scientific and technological innovation concepts and technologies, it has built:

• the country's first industrialized 1 million tons/year suspended bed residue oil hydrogenation unit with independent intellectual property rights;
• the country's current largest single unit 2.3 million tons/year catalytic thermal cracking unit;
• 2 million tons/year heavy oil hydrogenation units,
• 350,000 tons/year polypropylene,
• 200,000 tons/year polypropylene
• 400,000 tons/year polyethylene
• other major production units, as well as their supporting public works and storage and transportation systems.

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