品質は保証されているので安心してください

N1 品質 hinshitsu quality N3 保証 hoshou guarantee, assurance, warranty N5 ている te iru be doing N4 安心 anshin relief, peace of mind N5 てください te kudasai please do

N4 品 hin, hon / shina goods, refinement, dignity N4 質 shitsu, shichi, chi / tachi, tada.su, moto, warifu substance, quality, matter N1 保 ho, hou / tamo.tsu protect, guarantee, keep N1 証 shou / akashi evidence, proof, certificate N4 安 an / yasu.i, yasu.maru, yasu, yasu.raka relax, cheap, low N4 心 shin / kokoro, -gokoro heart, mind, spirit

N5 〜てください te kudasai Polite request expression, attaches to te-form verb, equivalent to please do N5 〜ている te iru Indicates ongoing action, continuous state, repeated habit, or resulting condition depending on context N4 〜ので node Indicates cause or reason in a softer way than kara, connects two clauses, often used in polite explanations N4 〜し shi Indicates multiple reasons or qualities, connects clauses or adjectives, means besides that, and also N5 〜で de Indicates where an action happens, means used, tool, cause, or material depending on context N5 〜の no Indicates possession, relation between nouns, nominal explanation, or turns a verb into a noun phrase N5 〜は wa Marks the topic of the sentence, indicates what the sentence is about, can contrast with another element, organizes main information