1st Decade : The construction of business foundation - started from selling gems and building the gems trading centre
to become a centre for selling gems and jewellery products for the company.
2nd Decade : The construction of jewellery business foundation - Ampun started to become a stakeholder in the jewellery business by cooperating with foreign designers.
3rd Decade : Searching for its own supply of materials - Ampun collaborated with businessmen in Thailand to open a gemstones mine in Kanchanaburi Province. At the time of the opening, this mine(S.A.P. Mining) was the prototype mine and become the biggest mine in South East Asia.
4th Decade : The Construction of Mass Production - Ampun decided to expand its production bases for quality gems and jewelry products that meet economies of scale which brought about the appropriateness of the production cost and product quality.