May. 14, 2026
In response to the growing global demand for high-standard leather products, Sinco Factory officially launches its upgraded comprehensive quality assurance system. We strictly optimize raw material selection, accessory configuration, production inspection, and after-sales guarantee. Adhering to international manufacturing standards, we continuously provide stable, durable, and eco-friendly leather products for global wholesalers, brand retailers, and customized partners.
Quality starts from qualified raw materials. All leather materials adopted by Sinco are full-grain leather that meets international environmental protection standards. Every batch of leather has passed CE certification and RoHS certification, ensuring non-toxic, harmless, and eco-friendly properties. Furthermore, we have obtained the prestigious LWG Gold Rating, proving our standardized and sustainable leather manufacturing process.
In terms of factory qualification, Sinco has successfully passed BSCI social compliance certification and ISO9001 international quality management certification. Standardized production management, safe working environment, and compliant production procedures enable us to steadily undertake long-term bulk orders from European and American high-end brands.
To maintain consistent product durability and high-end texture, we never compromise on accessories. For hardware parts, we exclusively select high-grade zinc alloy and copper hardware, and stainless steel hardware is available upon customer request. We strictly prohibit cheap iron hardware to effectively avoid oxidation, rust and deformation.
All leather goods are equipped with authentic YKK zippers, internationally recognized for ultra-smooth pulling feel, abrasion resistance and long service life. Even after long-term repeated use, the zippers remain stable without jamming or damage.
Sinco implements a mature 3-phase & 26-step full inspection system for every finished product to achieve zero-defect delivery:
We meticulously check leather texture, hardware fitting, surface finish, color uniformity, glue spreading, interior lining, stitching thread and detailed appearance to eliminate surface blemishes.
We conduct professional tests on holes, buttons, metal latches, zippers, shoulder straps, drop resistance, stain resistance and low-temperature resistance. All products adapt to complex daily usage scenarios.
Before shipment, our team inspects printing clarity, packaging firmness, product size, compression resistance, waterproof performance, label and barcode accuracy. Strict outer packaging management ensures intact transportation across borders.
To safeguard the legitimate interests of every cooperative client, Sinco provides official written guarantee agreements. The quality guarantee agreement promises free remanufacturing for any production quality problems. Meanwhile, the delivery time guarantee agreement ensures 100% on-time shipment to avoid customer sales delays.
Supporting diversified customization demands, our factory owns 5 professional designers. We provide one-stop services including prototype designing, sample making and personalized logo customization. Customers can freely confirm material, craftsmanship and appearance details through samples before mass production.
About Sinco Factory
Sinco Factory is a BSCI and ISO 9001 certified manufacturer specializing in premium leather goods. Adhering to a zero-defect philosophy, the company operates a 3-Phase, 26-step control system and uses only certified eco-friendly full-grain leather, YKK zippers, and copper or zinc alloy hardware. With an in-house design team of five, Sinco supports end-to-end customized sample making and formal guarantee agreements to protect partner interests worldwide. We keep optimizing production standards to create long-term win-win cooperation with global partners.
Get in touch with your detailed requirements
To discuss your project, request a sample, contact Sinco Factory today.
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