Product Description:Safe self-locking cap, thickened hard HDPE, can be matched with corrosion resistant PP red cap and blue cap.Classic red burglar-proof cover, fine workmanship, thick products, never jerry-building, there are no products of the same type on the market, varieties are currently 175 ml, 250 ml, 500 ml, 1000 ml, ml. The price of this product may not be the most competitive