China High Stiffness Manufacturer, Supplier, Factory

At present, customers use mold etching, silk screen printing, spray painting, and in mold transfer printing methods to produce company logos, but they are not firm and easy to fall off. To solve this problem, you can try our company's laser marking PE rotational molding material!

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 July 4th, Dongguan, Guangdong became a focal point for rotational molding technology. Our company, together with Sunrise Rotational Molding, Shanghai Jiechuang, and Zhenhai Refining and Chemical, held the 8th Rotational Molding Technology Festival. From morning till night, the venue was lively and filled with an atmosphere of exchange and learning.

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.

Among rotomolding materials, Nylon 12 (PA12) stands out with its unique performance combination. As a key member of the long-carbon-chain nylon family, Nylon 12 features longer molecular chains and lower amide bond density, resulting in an extremely low water absorption rate of approximately 0.25% — the lowest among all nylon products. Additionally, it boasts low density, excellent low-temperature toughness, and outstanding oil and chemical resistance. It maintains good toughness even in extreme cold environments as low as -70°C, with a long-term service temperature reaching 80-90°C.