... Quality of Safety Eyewear(1) Look it: generally speaking, the lens & frame of eyewear are shaped by injection molding, the ... rough and may hurt your skin.(2) Measure it: in most cases, lens thickness & spectacles weight is critical factor of quality, the ... safety goggles (1.3mm PVC lens & soft PVC frame)Hangzhou Hongsheng Plastic Industry Co., Ltd. locates in Xiaoshan District, Hangzhou city, which ...