... knapsack sprayer Material:PP/PE Specification: 20 Liter , brass button/Alu lance , Working pressure: 0.2-0.3 Mpa knapsack ... sprayerMaterial:PP/PESpecification: 20 Liter ,brass button/Alu lance ,Working pressure: 0.2-0.3 Mpa Yuyao Dongxia Sprayer ... manufacturer specialized in pressure sprayer, plastic sprayer & bottle, trigger sprayer, lotion pump, mist sprayer and other relevant OEM or ...