Altech Chemicals (ASX:ATC, FRA:A3Y) has extended its share purchase plan to Wednesday 7 June 2017.
The offer will be priced at a 5% discount to the five day volume-weighted average price up to, and including, the day on which the offer closes.
Each eligible shareholder can apply for up to $15,000 of fully-paid shares, with the minimum $1,000 of new shares.
Altech is aiming to become one of the world's leading suppliers of 99.99% (4N) high purity alumina (HPA).
Earlier in the month Altech appointed German engineering firm, SMS group GmbH, as the engineering, procurement and construction contractor for its proposed Malaysian high purity alumina plant.