Our company has developed food-grade LSR dropper teats with a Shore hardness of 50A and with three sizes of large, medium, and small. Liquid Silicone Rubber is non-toxic, odorless, acid/alkali proof, and resistant to high and low temperature(-40℃~230℃) and to chemicals. Applied to dropper teats, it has high-optical transparency and high resilience, which provides customers with a better experience compared to compression molded rubber. In an era of rising global awareness of environmental protection, we are most concerned about consumer product safety and environmental sustainability. Liquid Silicone Rubber is BPA-free, plasticizer-free, and not detrimental to our health. Furthermore, Liquid Silicone Rubber is biodegradable, which alleviates the burden on our beloved planet. In terms of manufacturing dropper teats, Liquid Silicone Rubber is definitely the safest option.