About Us
Silicone& Plastic Products Manufacturer
YEJIA Optical Technology (Guangdong) Corporation is your premier partner for top-quality custom silicone and plastic products. As a leading OEM manufacturer, we specialize in manufacturing silicone valves, plastic dispensing closures, LSR speaker diaphragms, silicon lenses, plastic optics, and more. Our seamless integration of research, development, production, and sales ensures a comprehensive service for large-volume custom silicone and plastic products, delivering excellence from mold design to finished product assembly.
Our state-of-the-art factory spans over 10,000sqm of clean molding workshops and holds certifications including ISO13485, ISO45001, IATF16949, ISO9001, and ISO14001. Equipped with advanced machinery such as imported plastic injection molding machines, LSR injection molding machines, automatic production equipment, and vacuum compression molding machines, we guarantee precision, high quality, and production efficiency. Stringent quality inspection processes and comprehensive testing equipment further ensure product stability and consistency.
YEJIA Optical has solidified its position as a trusted supplier to numerous Fortune 500 companies due to our precision manufacturing capabilities. Our products find applications across various industries including food and beverage, automotive, optics, acoustics, mobile phones, outdoor electronics, smart wearables, medical, beauty, and more.
Our dedicated team of 36 experts is committed to providing tailored silicone and plastic product solutions. Through our ERP system and Manufacturing Execution System (MES), customers can easily stay informed about order dynamics and monitor project progress. When it comes to high-level custom silicone or plastic products, YEJIA Optical is the ultimate choice for renowned brands.
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.
