DHA Siamwalla Co., Ltd. (DHAS) is known as a leader of stationery and office supplies market for over 100 years. With the vision of “One Step Ahead”, DHAS invested in the first factory in 1979 which located in Navanakorn Industrial Park. In 2007, DHAS has expanded their manufacturing and builds the 2nd factory in Rojana Industrial Park, Ayutthaya, with about 48,000 ㎡, of which over 20,000 ㎡ used as operating area. The new factory has its high technology and innovation of plastic conversion, paper conversion, and metal forming. DHAS combines innovation and technology to achieve capability with efficient R&D team and specialist more than 300 people. It also focuses on quality management system by having ISO 9001:2015 certified and 3 times of PM Award in 2007, 2008, and 2016. With more than 3 decades of manufacturing experience could guarantee product quality and the customer would be satisfied. DHA Siamwalla Co., Ltd. pleased to be your business alliance who promised to grow together.