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Company News - Shenzhen Yi Fu Long Trade Development Co., Ltd.

China-Vietnam Supply Chain Synchronization: A Real-World Case Study in Material Logistics
A dual-base manufacturing strategy looks clean on an RFQ. Executing it—tracking polymer resin lots across international borders, synchronizing container loading sequences, and delivering calibrated TPU substrates to a Vietnamese welding floor in the same pristine condition they left a Chinese laboratory—is where most brokers break down. This case study documents the actual shop-floor operations behind Sealock's China-Vietnam manufacturing transfer: from upstream LLDPE compound gating and vacuum-sealed roll storage to Yang Ming container loading protocols and barcode traceability manifests. Because certificates are easy. Execution is what separates serious OEM partners from expensive mistakes.
2026-05-20
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The Green Evolution: Transitioning to PFAS-Free TPU in High-Performance Waterproof Gear
This comprehensive technical report analyzes the critical transition from traditional polymers to PFAS-Free TPU in the waterproof equipment industry. We delve into the environmental mandates driving the non-fluorinated movement, the molecular advantages of TPU in 27.12 MHz high-frequency welding, and Sealock’s rigorous quality protocols for ensuring that sustainable gear meets professional-grade 1.0 Bar submersible standards.
2026-04-30
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27.12 MHz High-Frequency Welding Technology | Sealock Outdoor Manufacturing
Not all waterproof seams are created equal—and the difference isn't visible until a product fails in the field. Conventional heat sealing bonds materials at the surface. High-Frequency welding at 27.12 MHz does something fundamentally different: it agitates molecules from within, creating a structural fusion that is frequently stronger than the base fabric itself. For OEM buyers specifying IPX7 or IPX8-rated gear, understanding this distinction isn't a technical detail—it's the difference between a product that survives a season and one that delaminates after three months. Here's how the technology works, why frequency matters, and what it means for your production quality standards.
2026-04-30
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Guangzhou City, China, October 31 - November 4, 2025
Guangzhou City, China, October 31 - November 4, 2025 – As a key player deeply rooted in the outdoor gear and luggage sector, we are honored to announce our participation in this year’s highly influential industry event – the China Import and Export Fair. We sincerely invite you to visit our booth to witness the demonstration of cutting-edge solutions, interact with industry peers, and explore new cooperation opportunities together.
2025-10-23
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We will attend the ISPO Germany exhibition
Sealock Outdoor Gear co.,Ltd. will attend the ISPO Germany exhibition from December 3rd to 5th for 3 days. Our exhibition number is C2.341.
2024-12-04
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【Invitation】 Sealock invites you to attend the EICMA 2024
We are pleased to announce that we will attend the EICMA 2024, which will be held in 5 -10 NOVEMBER 2024.
2024-10-26
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