Sejin Machinery Co.

Sejin Machinery Co. has been in business since 1991, giving them decades of experience in manufacturing and servicing extrusion machines, mixers, and plastic extruders — a strong signal of reliability for industrial buyers. Their core products are widely used in packaging and construction, making them a credible supplier for buyers in those sectors. However, no work email, phone, or business documents have been verified, which raises concerns about their legitimacy and ability to respond to urgent technical inquiries. Buyers should request additional verification before placing large orders or sharing detailed project requirements. Without verified contact details, it's harder to confirm real-time support or track order progress. The lack of documentation also increases risk of fraud or miscommunication. While the company's long history is a plus, it's not enough on its own without proof of real-world operations.