| Items | Melt flow rate ( MFR ) g/10min | Tensile yield stress ( σy ) MPa | Tensile fracture nominal strain ( εtb ) % | Bending modulus ( Ef ) MPa
| Impact strength ( acN ) kJ/m2 |
| Inspection basis | GB/T 3682.1 | GB/T 1041.1 | GB/T 9341 | GB/T 1403.1 | |
| HP550J | 3.0-3.4 | 32-34 | 400-500 | — | — |
| HP520J | 2.9-3.1 | 32.5-33.5 | 400-500 | — | — |
| HP553J | 3.0-3.4 | 32-34 | 400-500 | — | — |
| HT568J | 3.5-4.0 | 34-38 | — | 1600-1800 | ≥1.0 |
| HP500N | 8-12 | ≥32 | ≥50 | ≥1200 | ≥1.0 |
| HP552R | 20-30 | ≥32 | ≥50 | ≥1200 | — |
| HP565S | 35-45 | ≥32 | — | — | — |
| HP648U | 65-75 | 37-40 | — | 1700-1800 | ≥1.2 |
Supply and service. Polypropylene from Dongying EastChem ships in 25 kg bags or 800/850 kg jumbo bags — container loading plans provided. Nineteen years of chemical manufacturing across three subsidiaries keeps bulk supply stable year-round: minimum order one 20′ container, samples dispatched in about 2 days, T/T or L/C payment, and a batch-specific COA with every shipment. See also polyethylene and the polymer range. Contact our sales team for current specifications, pricing and delivery schedules.