Most of a dragonfly's life is spent in the larval stage where it molts from six to fifteen times. Depending on altitude and latitude, larval development varies from the common one or two years to as many as six years.
HOME. OPS (Biaxially Oriented Polystyrene Sheet) is a thermoformable sheet produced by stretching polystyrene in two directions, lengthwise and crosswise. OPS can be used widely for transparent containers such as lids, trays, and foldable food containers because it has high transparency, rigidity and hygiene.Manufacturing Process of OPS Applications of OPS Most of OPS are used for food packaging containers such as food packs, trays, lids and fruit containers.PS can be used widely for transparent containers such as lids, trays, and foldable food containers because it has high transparency, rigidity and hygiene. Manufacturing Process of OPS Applications of OPS Most of OPS are used for food packaging containers such as food packs, trays, lids and fruit containers.
Expanded Polystyrene insulation is a lightweight, rigid, closed cell insulation. EPS is available in several compressive strengths to withstand load and back-fill forces.This closed-cell structure provides minimal water absorption and low vapor permanence.xpanded Polystyrene insulation is a lightweight, rigid, closed cell insulation. EPS is available in several compressive strengths to withstand load and back-fill forces.