1. BY-15Z onstant temperature water bath for pour point and condensation point
2. BY-15Z utomatic pour point and freezing point tester
3. BY-15A  pour point and pour point tester
4. BY-13A freezing point tester
5. BY-12A pour point tester
6. BY-12 pour point tester
7. BY-10 Conrad carbon residue tester
8. BY-32A automatic micro carbon residue detector
9. BY-09 carbon residue tester (electric furnace method)
10. BY-06 vacuum distillation range tes TAG：