Shenzhen Tonwa digital Technology CO.,LTD（TWA） has been working towards the exploiting , manufacturing and sales of Optical Low Pass Filters （OLPF），IR-CUT filters since its establishment in 2004. It is an enterprise which specializes in coating and optical process.

   We are the most professional one of the filter producers. Our products can be applied to a variety of camera products such as digital cameras, digital video cameras , Closed Circuit Televisions（CCTV）, camera phones, toys and PC cameras. Optical low pass filter (OLPF) is used in high end (high resolution) digital camera sensor to eliminate interference influence (Moire pattern) by crystalline birefringency. An OLPF can cut off the undesired high spatial frequency when the sensor resulting the image. The filters manufactured by TWA have passed the test by SGS and they meet the requirements of ROHS.

   With its fully trained technicians and experienced operators, our company is capable of engineering and manufacturing different kinds of optical products. TWA can also exploit and manufacture specific optical coating products to highly meet the specified needs and requirements of the clients.

   We strive to provide the best price and value for our customers in products.Our business philosophy is simple. Understand what the client needs. Match deliverables to the client's expectation. Give the customer consistent, honest and reliable service at a fair and reasonable price that always fits into our customers' business model.

   To be your reliable partner , we are looking forward to entering into your partnership!