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LOoNGJAY®Global Supply · One-Stop Sourcing
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LOoNGJAY®Global Supply · One-Stop Sourcing
Direct connections with principals in Japan, Korea, the United States and Europe, coordinated from our Shenzhen headquarters and supported by partner warehouses and local logistics across five cities, keeping every step under control from direct factory sourcing to local delivery.
End-to-end assurance from direct factory sourcing to local delivery.
Authorized product lines from seven principals—Idemitsu, Ueno, Yamaguchi and Lotte, together with LJ Polymer—covering high-performance engineering plastics including SPS, LCP, PPA, mica powder and PC, with direct factory contracts and a stable supply.
Partner warehouses across five cities—Shenzhen, Dongguan, Nanjing, Qingdao and Taipei—hold safety stock of common grades, palletized in standard 25 kg packaging with COA/TDS supplied alongside the goods.
Ready to dispatch locally from five cities, with coverage of major national logistics lines. Urgent orders are arranged for shipment within 24 hours, by express, dedicated freight or customer pickup.
One-to-one material selection from our engineers, who recommend grades based on part operating conditions, temperature and chemical environment, and provide full TDS/COA, trial samples, mold testing and molding process guidance.
Direct contracts with principals including Idemitsu, Ueno, Yamaguchi and Lotte, building stable import channels through international ports and ocean freight. From production scheduling and export customs to domestic clearance, every batch is fully traceable, factory-sealed and reliably supplied.
Headquartered in Shenzhen, with partner warehouses and logistics nodes in Dongguan, Nanjing, Qingdao and Taipei, forming a spot-stock network across South, East and North China. Common grades are held as safety stock, palletized in factory-sealed 25 kg packaging; local orders receive same-day response and urgent orders ship within 24 hours.
Engineers support you throughout, from requirement to mass production.
Part conditions and performance needs
Engineer-recommended grades
Samples sent to verify performance
Local dispatch from five cities
Molding and application support
Based on part conditions, heat resistance, chemical environment and certification needs, our engineers recommend suitable grades one-to-one and provide full TDS/COA, supporting sampling, injection molding guidance and mass-production follow-up to shorten selection cycles and reduce trial-and-error costs.
Longjie Polymer's China headquarters is in Shenzhen, Guangdong, specializing in the distribution and agency of polymers and specialty materials and offering one-stop materials solutions for a broad range of customers.
Sales & technical staff · local warehousing and logistics
Dongguan · Shanghai · Nanjing · Qingdao · Taipei
Shenzhen · Dongguan · Nanjing · Qingdao · Taipei
Shenzhen headquarters coordinates multi-brand agency, warehousing, logistics and technical services.
Direct links with principals in Japan, Korea, the United States, Singapore, France and Malaysia, enabling worldwide sourcing and nearby delivery for stable supply to customers globally.
Through international ports and ocean freight, we import factory-original resins and supply customers worldwide with stability.