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Choosing the right type of mechanical seal and material is crucial for the long-term performance of the machinery, as well as for the protection of both workers and the environment.

At present, the intelligent power grid project is flourishing, and the construction of distributed power stations is also vigorously promoted, which puts forward higher requirements for the electrical safety performance of high-voltage cable joints. The original conventional coating materials can no longer meet the higher performance requirements of flame retardancy and voltage breakdown resistance.

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.

Linear low-density polyethylene (PE-LLD) was selected as the base material. The melt blending was carried out by a twin-screw extruder, and the powder material suitable for rotational molding process was prepared by using a mechanical grinding mill.

CHINAPLAS 2026 is approaching in Shanghai April. Zhejiang Rotoun will showcase its upgraded rotomolding material for pickleball, crosslinking rotomolding material, and stone marble rotomolding material at Booth 6.2G56. With comprehensively enhanced product performance, we offer diversified solutions and one-to-one technical services, and sincerely invite all sectors to visit, discuss cooperation, and jointly promote industrial upgrading.