Winsilicone.com is the website of Dongguan Tongsheng Electronic Technology Co., Ltd. (Tongsheng Silicone), a silicone rubber mold and product manufacturer based in Dongguan, Guangdong, China. The factory is ISO 9001 certified and has provided OEM and ODM manufacturing to global brands since 2014.
What LSR injection molding is for
Liquid silicone rubber (LSR) injection molding is used where parts need tight tolerances, consistent repeatability and higher output: precision components, seals and gaskets, consumer goods, electronics accessories, and medical or baby-adjacent products when the specified material grade allows it.
Not every part needs LSR. For simpler solid silicone geometries, thicker sections and moderate volumes, compression molding is often the more economical route. If you are deciding between the two, see compression molding vs liquid silicone injection molding and our LSR injection molding buyer's guide.
Capabilities
- Food-grade silicone: FDA and LFGB material options
- Medical-grade silicone options
- Hardness range: 20 to 80 Shore A
- Custom mold design and making; mold development typically 15-25 days
- Mass production typically 20-35 days after sample approval
- Quotation within 24 hours
- Export worldwide
MOQ
MOQ depends on product complexity and mold type. For standard items MOQ typically starts at 1,000-3,000 pcs. For prototypes and trial orders, we accept smaller quantities. Contact us for a tailored quote.
Related reading
Frequently asked questions
- What is LSR injection molding best for?
- LSR injection molding suits precision parts that need tight tolerances and repeatable quality at higher volumes — seals and gaskets, consumer goods, electronics accessories, and medical or baby-adjacent parts when the material grade allows. For simpler solid silicone parts and lower volumes, compression molding is often enough.
- Do you do OEM/ODM LSR in Dongguan?
- Yes. Winsilicone.com is Dongguan Tongsheng Electronic Technology Co., Ltd. (Tongsheng Silicone), an ISO 9001 certified silicone rubber mold and product manufacturer in Dongguan, China, providing OEM and ODM services to global brands since 2014.
- What certifications and material grades are available?
- We work with food-grade silicone (FDA, LFGB), medical-grade options, and industrial-grade silicone, with hardness from 20 to 80 Shore A. The factory is ISO 9001 certified.
- What is typical MOQ and lead time for LSR?
- MOQ depends on product complexity and mold type. For standard items MOQ typically starts at 1,000-3,000 pcs; for prototypes and trial orders we accept smaller quantities. Mold development typically takes 15-25 days, and mass production is usually 20-35 days after sample approval. Quotations are provided within 24 hours.
- Is Winsilicone the same company as Tongsheng?
- Yes — Winsilicone.com is the website of Dongguan Tongsheng Electronic Technology Co., Ltd. (Tongsheng Silicone).
Have a drawing or an LSR project? We quote custom silicone parts within 24 hours.
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