API 370 is a high heat polystyrene produced in pellet form. It has excellent strength and clarity as well as fast set-up properties. Application: Used in the manufacture of toys, containers, housewares, and medical applications. Processing methods include blow molding, extrusion and injection molding.

API 390 is a general purpose polystyrene produced in pellet form for injection molding. API 390 has excellent clarity and easy flow. Application: Used in the manufacture of toys, containers, housewares, cosmetic containers, and medical applications.

API 392 is a general purpose polystyrene produced in pellet form for injection molding. API 392 has excellent clarity and high flow. Application: Used in the manufacture of containers, housewares, toys, and medical applications.

API 395 is one of the highest flowing crystal polystyrenes commercially available. It is produced in pellet form for injection molding and compounding. This material is designed for hard to fill applications.

API 410 is a low impact polystyrene with very high gloss and superior dimensional stability. Application: API 410 is ideally suited for point of purchase displays where high gloss and some impact is needed. Other applications include caps, frames and cutlery.

API 425 is a medium impact grade of polystyrene for injection molding. API 425 has good gloss, easy flow, and fast cycling properties, Application: API 425 is widely used in cosmetic packaging, food packaging, cassettes, caps, and closures.

API 500 is a heat resistant grade of impact polystyrene. It has superior heat resistance, good impact resistance and easy colorability. Application: API 500 is used in housewares, toys, containers, displays, and appliance parts.

API 505-HF is a high flow, intermediate grade of impact modified polystyrene. This material possess exceptional moldability and easy colorablility. API 505 HF offers good retention of mechanical properties in applications with long flow length requirements. Application: API 505-HF is widely used in housewares, housings of all types, toys, displays, and as base resin for color concentrate production.

API 505 is an intermediate grade of impact modified polystyrene. This material has exceptional moldability and colorability. Application: API 505 is widely used in the manufacture housewares, toys, containers, displays, and a wide range of injection molded applications.

API 545 is a high impact, high heat resistant grade of impact modified polystyrene. This material features fast set-up as well as easy colorability. Application: API 545 is suggested for heavy parts with large cross section requiring high impact resistance. Housings, tote bins, and shoe heels are some examples.

API 550 is a high impact grade of polystyrene. It is characterized by good impact and processability. Application: API 550 is widely used in the manufacture of housewares, toys, containers, appliance parts, speaker housings, and various types of extrusions.

API 550-HF is a high impact grade of polystyrene. It is characterized by good impact and processability. API 550-HF offers good retention of mechanical properties in applications with long flow length requirements.

API 645-21 is a super high impact polystyrene used in applications requiring a superior level of toughness along with good tensile a flexural properties. On balance this extrusion grade polymer approaches some ABS properties. Application: Widely used in sheet stock, housings, profiles, and tubing where a high degree of impact is needed.

API 650-21 has been developed for injection molding applications that need a high degree of toughness and gloss than conventional polystyrene. This polymer approaches ABS type properties. Application: Widely used in appliance housings, toys, bathroom accessories, and displays