About Us
YEJIA OPTICAL (Silicone Division)
YEJIA Optical Technology (Guangdong) Corporation (Silicone Division) is a reputable high-quality silicone products manufacturer. Since our establishment in 2009, we have been committed to providing custom silicone products, with a focus on mold design and making, liquid injection molding, silicone over-molding, compression molding, and other advanced silicone molding technologies.
Our factory is equipped with advanced imported mold making and liquid silicone rubber injection molding production equipment, and we have established over 10,000 square meters of workshops for silicone molding. We also have various class 100,000 clean production workshops for LSR injection molding and a 100,000 clean UV activation surface treatment workshop for custom silicone products. As a professional silicone products manufacturer, we take pride in our certifications, including ISO9001, ISO14001, ISO13485, and IATF16949. Our commitment to quality and efficiency is evident in our state-of-the-art facilities and industry-recognized certifications.
YEJIA specializes in manufacturing a wide range of high-quality silicone products, including silicone valves, silicon lenses, waterproof silicone gaskets, silicone covers, silicone watch bands, medical silicone products, and custom silicone products. Our team of professionals utilizes the latest silicone molding techniques to ensure that our products are of the highest quality. We are dedicated to providing exceptional customer service and strive to exceed our customers' expectations.
We have established ourselves as a leading precision technology manufacturer in the liquid silicone rubber injection molding and silicone over-molding industry. Our extensive client base includes Fortune 500 enterprises such as SONY, SHARP, LG, BYD, and many others. We take pride in providing top-quality custom silicone products and molding services to our clients, both directly and indirectly. Our commitment to excellence has enabled us to build a strong reputation within the industry, and we remain dedicated to delivering innovative solutions that meet the evolving needs of our clients.
At YEJIA, we offer a cost-saving solution for your custom silicone product needs. With 8 departments and a team of 350 employees dedicated to silicone molding, we are available 24/7 to serve your projects. Our state-of-the-art ERP and MES systems allow us to track your orders at any time, ensuring timely delivery. We take pride in being your ideal partner for custom silicone products and welcome you to visit our factory at your convenience. Contact us today to learn more about how we can meet your manufacturing needs.
development history
Yejia Optical Technology (Guangdong) Corporation (Dongguan Yejia Optical was renamed).
Nov., 2016
April, 2016
Optical Division was merged.
Dongguan Yejia Optical Technology Co., Ltd. (Tronshin was renamed).
Nov., 2015
Aug., 2014
Optical Division II was invested.
Optical Division was set up.
Sep., 2013
Feb., 2012
Dongguan Tronshin Silicone Products Co., Ltd. moved to Pacitech Town.
Dongguan Tronshin Silicone Products Co., Ltd.
June, 2009
Our Advantage
Mold Making
To achieve optimal results, it is imperative for a workman to sharpen his tools before beginning any task. Similarly, in the manufacturing of high-quality silicone products, the use of good LSR molds is essential. Our company has taken great strides in this regard by importing advanced mold making and inspection equipment, as well as employing a team of skilled Japanese engineers to manage the mold making process. This ensures the precision of the molds during processing, resulting in superior end products.
LSR Injection Molding
LSR injection molding is a specialized process that shares similarities with plastic injection molding. However, unlike the latter, LSR injection molding involves injecting the material through the feeding system after the mold is closed. The material is then heated and injected to produce silicone products. It is worth noting that the flow rate of liquid silicone is much faster than that of plastic materials, making it a more efficient option.
Silicone Overmolding
Silicone overmolding is a process that involves a second molding of silicone material with another type of plastic, metal, fabric, or silicone part. This process can be divided into two categories: LSR overmolding (liquid silicone) or compression overmolding (solid silicone). YEJIA has been the leading manufacturer of silicone products, experienced in silicone overmolded with other materials.
Compression Molding
Compression molding is a widely utilized method for producing silicone products that are popular among consumers, such as silicone sealing rings and silicone bottle sleeves. This technique offers lower tooling costs and is suitable for products with a variety of colors. It is a highly effective means of manufacturing these types of products and has been embraced by many industries.
SILICONE MOLDING
Production Workshop I
The workshop has 12 sets liquid injection molding machines and 6 sets compression moulding machines for the production of silicone gaskets, waterproof silicone parts, silicone sleeves and other custom silicone products. 20 sets 50 times CCD magnification inspection instruments are available to improve the efficiency of inspection of many tiny customized silicone parts.
Production Workshop II
The workshop has 14 sets of liquid injection molding machines and is set up as a 100,000 clean production workshop, mainly producing VR silicone covers, silicone watch bands, silicone ear plugs, silicone ear hooks and other electronic consumer liquid silicone products. In order to protect the environment, we have also set up 2 UV activated surface treatment lines, which is not like oil spraying, it uses UV light to change the surface of silicone products to make it less static, and makes product surface feels like baby skin.
Production Workshop III
This workshop is a class 100,000 clean room dedicated to the production of optical silicon lens and medical silicone products, with 9 sets ARBURG horizontal liquid injection molding machines and 3 sets precision vertical liquid injection molding machines, equipped with a class 10,000 inspection room and EVERFINE GO-HD5 automotive and signal Goniophotometers for light performance testing. We highly welcome custom silicon lenses and other custom silicone products.
Silicone Valve Workshop
The silicone valve automatic punching production workshop is also set up according to the 100,000 class clean workshop standard and it comes with 3 sets AOI measuring instruments. The automatic punching equipment is independently developed by our engineering team, and the non-standard custom punching equipment is equipped with inspection function, which not only improves the production capacity and testing efficiency, but also reduces the defective rate, welcome to customized silicone valves.
