B&K Corporation Limited.

To evaluate the efficacy and safety of the experimental drug in subjects with (shallow/deep) second-degree burns

To evaluate the safety and tolerability of the trial drug in subjects with (shallow/deep) second-degree burns; to preliminarily evaluate the efficacy of the trial drug in subjects with (shallow/deep) second-degree burns; to evaluate the pharmacokinetic characteristics and immunogenicity of the trial drug in subjects with (shallow/deep) second-degree burns.

To evaluate the safety and tolerability of a single dose of recombinant human platelet-derived growth factor gel in healthy Chinese subjects