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Welm is developed by the in-house R&D team who integrates the product with the technology which interacts with the virtual pen and virtual paper. High-end talents and advanced technology have enabled DMS o-ring seal quality to reach the industry's leading level
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We have international quality system certification and UL certification.

MaterialPET+Coated paper、White card paper...etc.


Surface Finishing


Product name

Cake packaging box

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Regarding the quality management of Welm , it is demanded to pass through the extremely harsh quality control and inspection required for gift and crafts. DMS Seals manufacturer owns a team of professional R&D group and skilled technicians
Welm undergoes a series of production methods such as sanding, painting, and ovendry. All these methods are strictly carried out by our professional workers. DMS Seal manufacturer was established in 2008 and now has more than 10 years professional experience
Welm is made of clay and other inorganic nonmetallic minerals which are guaranteed to be free of lead, cadmium, and other heavy metal elements. The R&D teams have the ability to design and develop seals for various of complicated working condition of sealing system
The R&D of Welm is carried out by our professionals who provide innovative solutions incorporating energy conservation, heat recovery, and central control & monitoring. DMS Seals implements and optimizes its quality control systems
Welm is produced complying with a full range of quality and safety compliance tests required in the arts and crafts industry. DMS O Ring Manufacturers strictly follows the ISO9001 international quality certification system for production management
Our are widely popular in market based on mature technology and experienced team. Our products mainly include rod seals, piston seals, scraper seals, rotary seals, rubber seal products and spring seals
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