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On August 29, 2023, Zhejiang Ruitang, as one of the organizers, jointly organized and launched the "Rotomolding Technology Festival National Tour" in Suzhou with Zhenhai Refining and Chemical, Wenling Xuri, and Shanghai Jiechuang.

Melt flow rate (referred to as melt index) is an important performance indicator of rotational molding materials, which has a significant impact on the processing and forming of rotational molding products.

Zhejiang Rotoun Plastic Technology Corp. was established in 2013 with a registered capital of 40 million. The company is the largest manufacturer of rotational molding functional polymer powder in China, with advanced powder processing technology, a complete set of polymer measuring instruments, a large number of professional technical personnel and complete product certification certificates (NSF, UL, FDA, RoHS, etc.).

On August 7, 2025, our company officially signed a cooperation agreement with Xingzhi College of Zhejiang Normal University to jointly establish a practical education base, marking a solid step forward for both sides in deepening the integration of industry and education and collaborative education.Ruitang Technology has joined hands with Zhejiang Normal University Xingzhi College to jointly build a practical education base, opening a new chapter in the integration of industry and education On August 7, 2025, our company officially signed a cooperation agreement with Xingzhi College of Zhejiang Normal University to jointly establish a practical education base, marking a solid step forward for both sides in deepening the integration of industry and education and collaborative education. This cooperation aims to fully leverage the respective advantages of the school and the enterprise to create a high-quality platform that closely integrates industry, academia and research.

Today, we are going to explore the coating problems encountered in the rotational molding process of plastic fuel tanks and their solutions.

Rotomolding HDPE, short for rotationally molded high-density polyethylene, is a specialized thermoplastic material used in the production of large, seamless, and durable hollow products. The rotomolding process involves heating powdered HDPE resin inside a rotating mold, ensuring even material distribution and the formation of stress-free structures. This technique has gained immense popularity across industries such as automotive, agriculture, marine, and chemical storage due to its ability to produce complex shapes with exceptional strength and longevity.