Etched lid for lid sealing for sealing applications

Etched lid for lid sealing for sealing applications

While it is critical that semiconductor packages have a reliable hermetic cover to protect sensitive contents, some chips will not tolerate high temperatures during soldering. For those circumstances, a low temperature seam sealing process is necessary. WinWay offers its innovative etching lid, a solution for hermetic applications where the chips are unable to withstand solder reflow temperatures in an oven.

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Recognized by multiple parties

The company has passed ISO9001:2015 certification, and has been recognized by many customers for its excellent quality.

Focus on R&D

The company has been committed to the development, optimization and improvement of manufacturing technology, and has obtained ten patent certificates.

Rich production line

The company has injection molding machines, CNC machining centers, precision CNC lathes, as well as gold-plated and silver-plated production lines.

Customer first

The company continues to improve in order to ensure the interests of customers and fully meet customer product needs.

The whole process of etching

Founded in 2005, WinWay is a Hong Kong based enterprise, which is located in Changan Town, Dongguan City.

WinWay focuses on providing you with precision machining, precision tooling, etching lid, precision hardware, precision mechanical, metal injection, precision metal, CNC precision, Precision Plating, CNC parts, Optical Communication Parts and Precision Medical Parts, high-mix/small-volume and Low-mix/high-volume manufacturing services.

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Etching lid seam welding process & assembly enhance

WinWay lids are composed of Kovar, steel and other alloys, and are used in the seam welding process to melt and fuse the thinner edges of the lids onto a metal seal ring. This concentrates the greatest heat at the perimeter of the lid to enable a weld onto the metal seal ring. 

Precision Metal Parts with Photochemical Machining

A specific type of metal etching, photochemical machining—also known as photo etching—is the ideal way to economically produce complex parts with fine detail. Fundamentally, photo etching is similar to other types of metal etching. A coating is applied to a sheet metal surface, and acid is used to dissolve away exposed areas.

Unlike other etching methods, however, photo etching involves the use of hardened photographic film. The film shows the negative image of the part to be created, and two identical sheets are applied to the front and back of the sheet metal. That assembly is then laminated with a UV-sensitive photoresist, which hardens only around the clear areas of the film. The outlines of the parts are left unprotected by the resist, and when the assembly is bathed in an acidic solution, that outlining material is washed away, leaving only the parts of interest.

How does metal etching work?

The metal etching process works by ‘printing’ a component design onto photoresist which is laminated onto metal. The areas of photoresist which have not been printed are removed, exposing the metal, which is subsequently etched away.

Industrial metal etching

Industrial metal etching is a metal manufacturing method that uses an acid bath to subtract material and form the desired shape. Generally, the industrial metal etching process involves five steps: cleaning, masking, graffiti, etching and decontamination

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What users say about WinWay Tech

"We love the interface, the experience, and most importantly… the results."


"We’ve solved the biggest problem for every business, the lead problem. We are now constrained by sales time and no longer lack interested prospects."


High precision, very good processing, good chamfering

Frequently Asked Question

Do you have any question?

Etching technology is divided into wet etching and dry etching

Metal etched lid is mainly used for communication box shielding

Processing area: The processing area of stainless steel parts should be relatively fixed. The platform of the stainless steel processing area should be isolated with rubber pads. The stainless steel parts processing area should avoid damage and pollution to the stainless steel parts. Cutting: The cutting of stainless steel parts adopts shearing or plasma cutting, sawing and so on. Machining: The stainless steel parts should also be protected during machining such as turning and milling, and the oil stains, iron filings and other sundries on the surface of the workpiece should be cleaned when the work is completed. Forming and adding workmanship: Effective measures should be taken to avoid scratches and creases on the surface of stainless steel parts during the process of rolling and bending of the head.

Stainless steel 403, 201, 304, 316, 316L, copper and other materials.

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